Thomas Edison Quotes

Thomas Alva Edison was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory.Edison was raised in the American Midwest; early in his career he worked as a telegraph operator, which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in Menlo Park, New Jersey, where many of his early inventions were developed. He later established a botanic laboratory in Fort Myers, Florida in collaboration with businessmen Henry Ford and Harvey Firestone, and a laboratory in West Orange, New Jersey that featured the world's first film studio, the Black Maria. He was a prolific inventor, holding 1,093 US patents in his name, as well as patents in other countries. Edison married twice and fathered six children. He died in 1931 of the complications of diabetes. Wikipedia  

✵ 11. February 1847 – 18. October 1931
Thomas Edison photo
Thomas Edison: 57   quotes 5   likes

Famous Thomas Edison Quotes

“Genius is one percent inspiration, ninety-nine percent perspiration.”

Spoken statement (c. 1903); published in Harper's Monthly (September 1932).
Variants:
None of my inventions came by accident. I see a worthwhile need to be met and I make trial after trial until it comes. What it boils down to is one per cent inspiration and ninety-nine percent perspiration.
Statement in a press conference (1929), as quoted in Uncommon Friends: Life with Thomas Edison, Henry Ford, Harvey Firestone, Alexis Carrel & Charles Lindbergh (1987) by James D. Newton, p. 24.
Variant forms without early citation: "Genius is one percent inspiration and ninety-nine percent perspiration. Accordingly, a 'genius' is often merely a talented person who has done all of his or her homework."
"Genius: one percent inspiration and 99 percent perspiration."
1900s
Variant: Genius is one per cent inspiration and ninety nine perspiration.

“Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.”

As quoted in Edison & Ford Quote Book (2003) edited by Edison & Ford Winter Estates.
Date unknown

“Many of life's failures are people who did not realize how close they were to success when they gave up.”

This is presented as a statement of 1877, as quoted in From Telegraph to Light Bulb with Thomas Edison (2007) by Deborah Headstrom-Page, p. 22.
1800s

“I have not failed. I've just found 10,000 ways that won't work.”

As quoted in: [J. L.] Elkhorne. Edison — The Fabulous Drone, in 73 Vol. XLVI, No. 3 (March 1967) http://www.arimi.it/wp-content/73/03_March_1967.pdf, p. 52
Disputed

“Just because something doesn't do what you planned it to do doesn't mean it's useless.”

As quoted in Artifacts : An Archaeologist's Year in Silicon Valley (2001) by Christine Finn. p. 90.
Date unknown

Thomas Edison Quotes about pain

“Tom Paine has almost no influence on present-day thinking in the United States because he is unknown to the average citizen.”

The Philosophy of Paine (1925)
Context: Tom Paine has almost no influence on present-day thinking in the United States because he is unknown to the average citizen. Perhaps I might say right here that this is a national loss and a deplorable lack of understanding concerning the man who first proposed and first wrote those impressive words, 'the United States of America.' But it is hardly strange. Paine's teachings have been debarred from schools everywhere and his views of life misrepresented until his memory is hidden in shadows, or he is looked upon as of unsound mind.
We never had a sounder intelligence in this Republic. He was the equal of Washington in making American liberty possible. Where Washington performed Paine devised and wrote. The deeds of one in the Weld were matched by the deeds of the other with his pen.

“Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty.”

The Philosophy of Paine (1925)
Context: Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies. Perhaps the larger number of responsible men still hoped for peace with England. They did not even venture to express the matter that way. Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty. It flashed from hand to hand throughout the Colonies. One copy reached the New York Assembly, in session at Albany, and a night meeting was voted to answer this unknown writer with his clarion call to liberty. The Assembly met, but could find no suitable answer. Tom Paine had inscribed a document which never has been answered adversely, and never can be, so long as man esteems his priceless possession.
In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again.. It must be remembered that 'Common Sense' preceded the declaration and affirmed the very principles that went into the national doctrine of liberty. But that affirmation was made with more vigor, more of the fire of the patriot and was exactly suited to the hour. It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.

“In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again..”

The Philosophy of Paine (1925)
Context: Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies. Perhaps the larger number of responsible men still hoped for peace with England. They did not even venture to express the matter that way. Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty. It flashed from hand to hand throughout the Colonies. One copy reached the New York Assembly, in session at Albany, and a night meeting was voted to answer this unknown writer with his clarion call to liberty. The Assembly met, but could find no suitable answer. Tom Paine had inscribed a document which never has been answered adversely, and never can be, so long as man esteems his priceless possession.
In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again.. It must be remembered that 'Common Sense' preceded the declaration and affirmed the very principles that went into the national doctrine of liberty. But that affirmation was made with more vigor, more of the fire of the patriot and was exactly suited to the hour. It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.

“It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.”

The Philosophy of Paine (1925)
Context: Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies. Perhaps the larger number of responsible men still hoped for peace with England. They did not even venture to express the matter that way. Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty. It flashed from hand to hand throughout the Colonies. One copy reached the New York Assembly, in session at Albany, and a night meeting was voted to answer this unknown writer with his clarion call to liberty. The Assembly met, but could find no suitable answer. Tom Paine had inscribed a document which never has been answered adversely, and never can be, so long as man esteems his priceless possession.
In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again.. It must be remembered that 'Common Sense' preceded the declaration and affirmed the very principles that went into the national doctrine of liberty. But that affirmation was made with more vigor, more of the fire of the patriot and was exactly suited to the hour. It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.

“The memory of Tom Paine will outlive all this. No man who helped to lay the foundations of our liberty — who stepped forth as the champion of so difficult a cause — can be permanently obscured by such attacks.”

The Philosophy of Paine (1925)
Context: The memory of Tom Paine will outlive all this. No man who helped to lay the foundations of our liberty — who stepped forth as the champion of so difficult a cause — can be permanently obscured by such attacks. Tom Paine should be read by his countrymen. I commend his fame to their hands.

“Many a person who could not comprehend Rousseau, and would be puzzled by Montesquieu, could understand Paine as an open book.”

The Philosophy of Paine (1925)
Context: Many a person who could not comprehend Rousseau, and would be puzzled by Montesquieu, could understand Paine as an open book. He wrote with a clarity, a sharpness of outline and exactness of speech that even a schoolboy should be able to grasp. There is nothing false, little that is subtle, and an impressive lack of the negative in Paine. He literally cried to his reader for a comprehending hour, and then filled that hour with such sagacious reasoning as we find surpassed nowhere else in American letters — seldom in any school of writing.

Thomas Edison Motivational Quotes

“Opportunity is missed by most people because it is dressed in overalls and looks like work.”

As quoted in An Enemy Called Average (1990) by John L. Mason, p. 55.
Date unknown

“Hell! There ain't no rules around here! We are tryin' to accomplish somep'n!”

Response received (after Edison spat on the floor and before he walked off) when M. A. Rosanoff joined the West Orange, New Jersey team in 1903 and humbly asked: “Mr. Edison, please tell me what laboratory rules you want me to observe.” M. A. Rosanoff’s quote appeared in Harper’s Monthly, September 1932, p. 24.
1900s
Variant: There ain´t no rules around here. We are trying to accomplish something.

“Everything comes to him who hustles while he waits.”

As quoted in Thomas Alva Edison : Sixty Years of an Inventor's Life (1908) by Francis Arthur Jones, p. 14.
1900s

Thomas Edison: Trending quotes

“I owe my success to the fact that I never had a clock in my workroom.”

Diary entry, as quoted in Defending and Parenting Children Who Learn Differently : Lessons from Edison's Mother (2007) by Scott Teel, p. 12.
Context: I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours — and thrived on it.

“His Bible was the open face of nature, the broad skies, the green hills. He disbelieved the ancient myths and miracles taught by established creeds.”

The Philosophy of Paine (1925)
Context: He has been called an atheist, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity.
His Bible was the open face of nature, the broad skies, the green hills. He disbelieved the ancient myths and miracles taught by established creeds. But the attacks on those creeds — or on persons devoted to them — have served to darken his memory, casting a shadow across the closing years of his life.
When Theodore Roosevelt termed Tom Paine a "dirty little atheist" he surely spoke from lack of understanding. It was a stricture, an inaccurate charge of the sort that has dimmed the greatness of this eminent American. But the true measure of his stature will yet be appreciated. The torch which he handed on will not be extinguished.

Thomas Edison Quotes

“We really haven't got any great amount of data on the subject, and without data how can we reach any definite conclusions?”

As quoted in Thomas A. Edison, Benefactor of Mankind : The Romantic Life Story of the World's Greatest Inventor (1931) by Francis Trevelyan Miller, Ch. 25 : Edison's Views on Life — His Philosophy and Religion, p. 295.
Context: We really haven't got any great amount of data on the subject, and without data how can we reach any definite conclusions? All we have — everything — favors the idea of what religionists call the "Hereafter." Science, if it ever learns the facts, probably will find another more definitely descriptive term.

“We never had a sounder intelligence in this Republic. He was the equal of Washington in making American liberty possible.”

The Philosophy of Paine (1925)
Context: Tom Paine has almost no influence on present-day thinking in the United States because he is unknown to the average citizen. Perhaps I might say right here that this is a national loss and a deplorable lack of understanding concerning the man who first proposed and first wrote those impressive words, 'the United States of America.' But it is hardly strange. Paine's teachings have been debarred from schools everywhere and his views of life misrepresented until his memory is hidden in shadows, or he is looked upon as of unsound mind.
We never had a sounder intelligence in this Republic. He was the equal of Washington in making American liberty possible. Where Washington performed Paine devised and wrote. The deeds of one in the Weld were matched by the deeds of the other with his pen.

“He has been called an atheist, but atheist he was not.”

The Philosophy of Paine (1925)
Context: He has been called an atheist, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity.
His Bible was the open face of nature, the broad skies, the green hills. He disbelieved the ancient myths and miracles taught by established creeds. But the attacks on those creeds — or on persons devoted to them — have served to darken his memory, casting a shadow across the closing years of his life.
When Theodore Roosevelt termed Tom Paine a "dirty little atheist" he surely spoke from lack of understanding. It was a stricture, an inaccurate charge of the sort that has dimmed the greatness of this eminent American. But the true measure of his stature will yet be appreciated. The torch which he handed on will not be extinguished.

“If our nation can issue a dollar bond, it can issue a dollar bill.”

Commenting on Henry Ford's currency plan in ”Ford sees wealth in Muscle Shoals”, New York Times (6 December 1921), p. 6 http://select.nytimes.com/gst/abstract.html?res=F30E11F63B5A1B7A93C4A91789D95F458285F9.
Context: If our nation can issue a dollar bond, it can issue a dollar bill. The element that makes the bond good, makes the bill good, also. The difference between the bond and the bill is the bond lets money brokers collect twice the amount of the bond and an additional 20%, whereas the currency pays nobody but those who contribute directly in some useful way. … It is absurd to say our country can issue $30 million in bonds and not $30 million in currency. Both are promises to pay, but one promise fattens the usurers and the other helps the people.

“The torch which he handed on will not be extinguished.”

The Philosophy of Paine (1925)
Context: He has been called an atheist, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity.
His Bible was the open face of nature, the broad skies, the green hills. He disbelieved the ancient myths and miracles taught by established creeds. But the attacks on those creeds — or on persons devoted to them — have served to darken his memory, casting a shadow across the closing years of his life.
When Theodore Roosevelt termed Tom Paine a "dirty little atheist" he surely spoke from lack of understanding. It was a stricture, an inaccurate charge of the sort that has dimmed the greatness of this eminent American. But the true measure of his stature will yet be appreciated. The torch which he handed on will not be extinguished.

“Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies.”

The Philosophy of Paine (1925)
Context: Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies. Perhaps the larger number of responsible men still hoped for peace with England. They did not even venture to express the matter that way. Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty. It flashed from hand to hand throughout the Colonies. One copy reached the New York Assembly, in session at Albany, and a night meeting was voted to answer this unknown writer with his clarion call to liberty. The Assembly met, but could find no suitable answer. Tom Paine had inscribed a document which never has been answered adversely, and never can be, so long as man esteems his priceless possession.
In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again.. It must be remembered that 'Common Sense' preceded the declaration and affirmed the very principles that went into the national doctrine of liberty. But that affirmation was made with more vigor, more of the fire of the patriot and was exactly suited to the hour. It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.

“It is absurd to say our country can issue $30 million in bonds and not $30 million in currency. Both are promises to pay, but one promise fattens the usurers and the other helps the people.”

Commenting on Henry Ford's currency plan in ”Ford sees wealth in Muscle Shoals”, New York Times (6 December 1921), p. 6 http://select.nytimes.com/gst/abstract.html?res=F30E11F63B5A1B7A93C4A91789D95F458285F9.
Context: If our nation can issue a dollar bond, it can issue a dollar bill. The element that makes the bond good, makes the bill good, also. The difference between the bond and the bill is the bond lets money brokers collect twice the amount of the bond and an additional 20%, whereas the currency pays nobody but those who contribute directly in some useful way. … It is absurd to say our country can issue $30 million in bonds and not $30 million in currency. Both are promises to pay, but one promise fattens the usurers and the other helps the people.

“I consider Paine our greatest political thinker. As we have not advanced, and perhaps never shall advance, beyond the Declaration and Constitution, so Paine has had no successors who extended his principles.”

The Philosophy of Paine (1925)
Context: I consider Paine our greatest political thinker. As we have not advanced, and perhaps never shall advance, beyond the Declaration and Constitution, so Paine has had no successors who extended his principles. Although the present generation knows little of Paine's writings, and although he has almost no influence upon contemporary thought, Americans of the future will justly appraise his work. I am certain of it.
Truth is governed by natural laws and cannot be denied. Paine spoke truth with a peculiarly clear and forceful ring. Therefore time must balance the scales.

“It is very beautiful over there!”

These have sometimes been reported as his last words, but were actually spoken several days before his death, as he awoke from a nap, gazing upwards, as reported by his physician Dr. Hubert S. Howe, in Thomas A. Edison, Benefactor of Mankind : The Romantic Life Story of the World's Greatest Inventor (1931) by Francis Trevelyan Miller, Ch. 25 : Edison's Views on Life — His Philosophy and Religion, p. 295.
1930s

“My mind is incapable of conceiving such a thing as a soul. I may be in error, and man may have a soul; but I simply do not believe it. What a soul may be is beyond my understanding.”

"Do We Live Again?" an interview with Edison, as quoted in Mr. Edison's New Argument from Design" in The Illustrated London News (3 May 1924).
1920s

“I never did anything worth doing by accident, nor did any of my inventions come indirectly through accident, except the phonograph. No, when I have, fully decided that a result is worth getting, I go about it, and make trial after trial, until it comes.”

Quoted by Theodore Dreiser in A Photographic Talk with Edison http://books.google.com/books?id=ZrIYCWaZCjwC&q=%22I+never+did+anything+worth+doing+by+accident%22+%22nor+did+any+of+my+inventions+come+indirectly+through+accident+except+the+phonograph+No+when+I+have+fully+decided+that+a+result+is+worth+getting+I+go+about+it+and+make+trial+after+trial+until+it+comes%22&pg=PA118#v=onepage, Success magazine (February 1898).
1800s

“When you've exhausted all possibilities, remember this: You Haven't!”

Not located in Edison's writings, but found in Robert H. Schuller's self-help book Tough Times Never Last, But Tough People Do! from 1983 https://books.google.com/books?id=8oTOa4n3k4oC&pg=PA28&dq=%22exhausted+all+possibilities%22+remember&hl=en&sa=X&ved=0ahUKEwiL88bb6-vKAhVD-mMKHVzNDVEQ6AEIHTAA#v=onepage&q=%22exhausted%20all%20possibilities%20remember%20this%22&f=false.
Disputed

“There is time for everything.”

This expression greatly predates any use of it by Edison. George Head used it in A Home Tour Through the Manufacturing Districts of England in the Summer of 1835 (1836), p. 198, in which he states: If time be judiciously employed, there is time for everything.
There is also an entry in the Bible (Ecclesiastes 3:1) that says There is [a] time for everything, however this varies a lot between the different translations.
Misattributed

“I never did a day's work in my life, it was all fun.”

As quoted in Edison & Ford Quote Book (2003) edited by Edison & Ford Winter Estates.
Date unknown

“Nature is what we know. We do not know the gods of religions. And nature is not kind, or merciful, or loving. If God made me — the fabled God of the three qualities of which I spoke: mercy, kindness, love — He also made the fish I catch and eat. And where do His mercy, kindness, and love for that fish come in? No; nature made us — nature did it all — not the gods of the religions”

Thomas Edison ""No Immortality of the Soul" says Thomas A. Edison. In Fact, He Doesn't Believe There Is a Soul — Human Beings Only an Aggregate of Cells and the Brain Only a Wonderful Machine, Says Wizard of Electricity". New York Times. October 2, 1910
1910s

“Non-violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages.”

As quoted inThe A-V Magazine Vol. 89, No. 1 (January 1981), p. 18, and The Extended Circle : A Dictionary of Humane Thought (1985) by Jon Wynne-Tyson, p. 75; this has been cited to "Harper's Magazine (1890)" but no occurence prior to the 1981 appearance has been located.
Disputed

“The doctor of the future will give no medicine, but will instruct his patient in the care of the human frame, in diet and in the cause and prevention of disease.”

This has been reprinted many times with slight variations on the wording; it is part of a much larger quote directly from Edison published in 1903:
:Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of disease. Medicine is played out. Every new discovery of bacteria shows us all the more convincingly that we have been wrong and that the million tons of stuff we have taken was all useless.
The doctor of the future will give no medicine, but will instruct his patient in the care of the human frame, in diet and in the cause and prevention of disease.
They may even discover the germ of old age. I don't predict it, but it might be by the sacrifice of animal life human life could be prolonged.
Surgery, diet, antiseptics — these three are the vital things of the future in preserving the health of humanity. There were never so many able, active minds at work on the problems of diseases as now, and all their discoveries are tending to the simple truth — that you can't improve on nature.
:* As quoted in "Wizard Edison" in The Newark Advocate (2 January 1903), p. 1 according to research by Barbara and David P. Mikkelson at snopes.com http://www.snopes.com/quotes/edison.asp.
1900s

“I am much less interested in what is called God's word than in God's deeds. All bibles are man-made.”

John Burroughs, in "Religious Contrasts : Letters of Pantheist and a Churchman", in The Atlantic Monthly, Vol. 128, No. 4 (October 1921), p. 520.
Misattributed

“During all those years of experimentation and research, I never once made a discovery. All my work was deductive, and the results I achieved were those of invention, pure and simple.”

On his years of research in developing the electric light bulb, as quoted in "Talks with Edison" by George Parsons Lathrop in Harper's magazine, Vol. 80 (February 1890), p. 425.
Context: During all those years of experimentation and research, I never once made a discovery. All my work was deductive, and the results I achieved were those of invention, pure and simple. I would construct a theory and work on its lines until I found it was untenable. Then it would be discarded at once and another theory evolved. This was the only possible way for me to work out the problem. … I speak without exaggeration when I say that I have constructed 3,000 different theories in connection with the electric light, each one of them reasonable and apparently likely to be true. Yet only in two cases did my experiments prove the truth of my theory. My chief difficulty was in constructing the carbon filament.... Every quarter of the globe was ransacked by my agents, and all sorts of the queerest materials used, until finally the shred of bamboo, now utilized by us, was settled upon.

“Restlessness is discontent — and discontent is the first necessity of progress. Show me a thoroughly satisfied man — and I will show you a failure.”

The Diary and Sundry Observations of Thomas Alva Edison (1948), p. 110.
Date unknown

“To Monsieur Eiffel the Engineer, the brave builder of so gigantic and original a specimen of modern Engineering from one who has the greatest respect and admiration for all Engineers including the Great Engineer the Bon Dieu.”

When Thomas Edison visited the Eiffel Tower during the 1889 World's Fair, he signed the guestbook with this message, as quoted in The Tallest Tower by Joseph Harris, p. 95.
1800s

“I believe in the existence of a Supreme Intelligence pervading the Universe.”

As quoted in Thomas A. Edison, Benefactor of Mankind : The Romantic Life Story of the World's Greatest Inventor (1931) by Francis Trevelyan Miller, Ch. 25 : Edison's Views on Life — His Philosophy and Religion, p. 293.
1930s

“If we did all the things we are capable of doing, we would literally astound ourselves.”

As quoted in Motivating Humans : Goals, Emotions, and Personal Agency Beliefs (1992) by Martin E. Ford, p. 17.
Date unknown
Variant: If we did the things we are capable of, we would astound ourselves.

“We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy — sun, wind and tide. … I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.”

In conversation with Henry Ford and Harvey Firestone (1931); as quoted in Uncommon Friends : Life with Thomas Edison, Henry Ford, Harvey Firestone, Alexis Carrel & Charles Lindbergh (1987) by James Newton, p. 31.

“I find out what the world needs. Then, I go ahead and invent it.”

As quoted in American Greats (1999) Edited by Robert A. Wilson and Stanley Marcus, p. 70.
Date unknown

“Everyone steals in commerce and industry. I've stolen a lot, myself. But I know how to steal! They don't know how to steal!”

As quoted in Tesla : The Modern Sorcerer (1999) by Daniel Blair Stewart, p. 411.
Date unknown
Variant: Everyone steals in commerce and industry. I have stolen a lot myself. But at least I know how to steal.

“I do not believe in the God of the theologians; but that there is a Supreme Intelligence I do not doubt”

The Freethinker (1970), G.W. Foote & Company, Volume 90, p. 147.
Date unknown

“To invent, you need a good imagination and a pile of junk.”

As quoted in Behavior-Based Robotics (1998) by Ronald C. Arkin. p. 8.
Date unknown

“We don't know a millionth of one percent about anything.”

As quoted in Golden Book (April 1931), according to Stevenson's Book of Quotations (Cassell 3rd edition 1938) by Burton Egbert Stevenson.
1930s

“So far as the religion of the day is concerned, it is a damned fake … Religion is all bunk.”

As quoted in What on Earth is an Atheist! (1972) by Madalyn Murray O'Hair, p. 251.
Date unknown

“There is no expedient to which a man will not go to avoid the labor of thinking.”

Sir Joshua Reynolds. Edison liked the quote and posted it around his factory.
Misattributed

“During all those years of experimentation and research, I never once made a discovery. All my work was deductive, and the results I achieved were those of invention, pure and simple. I would construct a theory and work on its lines until I found it was untenable. Then it would be discarded at once and another theory evolved. This was the only possible way for me to work out the problem. … I speak without exaggeration when I say that I have constructed 3,000 different theories in connection with the electric light, each one of them reasonable and apparently likely to be true. Yet only in two cases did my experiments prove the truth of my theory. My chief difficulty was in constructing the carbon filament.... Every quarter of the globe was ransacked by my agents, and all sorts of the queerest materials used, until finally the shred of bamboo, now utilized by us, was settled upon.”

On his years of research in developing the electric light bulb, as quoted in "Talks with Edison" by George Parsons Lathrop in Harper's magazine, Vol. 80 (February 1890), p. 425.
Variant:
Through all the years of experimenting and research, I never once made a discovery. I start where the last man left off. … All my work was deductive, and the results I achieved were those of invention pure and simple.
As quoted in Makers of the Modern World : The Lives of Ninety-two Writers, Artists, Scientists, Statesmen, Inventors, Philosophers, Composers, and Other Creators who Formed the Pattern of Our Century (1955) by Louis Untermeyer, p. 227.
1800s

“I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours — and thrived on it.”

Diary entry, as quoted in Defending and Parenting Children Who Learn Differently : Lessons from Edison's Mother (2007) by Scott Teel, p. 12
Date unknown

“We really haven't got any great amount of data on the subject, and without data how can we reach any definite conclusions? All we have — everything — favors the idea of what religionists call the "Hereafter."”

Science, if it ever learns the facts, probably will find another more definitely descriptive term.

As quoted in Thomas A. Edison, Benefactor of Mankind : The Romantic Life Story of the World's Greatest Inventor (1931) by Francis Trevelyan Miller, Ch. 25 : Edison's Views on Life — His Philosophy and Religion, p. 295
1930s

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