Abraham Lincoln photo

„When you reach the end of your rope, tie a knot and hang on.“

—  Abraham Lincoln 16th President of the United States 1809 - 1865

Mark Twain photo

„The secret to getting ahead is getting started.“

—  Mark Twain American author and humorist 1835 - 1910

George Eliot photo

„It is never too late to be what you might have been.“

—  George Eliot English novelist, journalist and translator 1819 - 1880

Leo Tolstoy photo
Socrates photo

„The secret of change is to focus all of your energy, not on fighting the old, but on building the new.“

—  Socrates classical Greek Athenian philosopher -470 - -399 BC

This is actually a quotation http://books.google.com/books?id=FUIHmRHf8SUC&lpg=PA130&dq=%22not%20on%20fighting%20the%20old%20but%20on%20building%20the%20new%22&pg=PA130#v=onepage&q=%22not%20on%20fighting%20the%20old%20but%20on%20building%20the%20new%22&f=false from a character named Socrates in Way of the Peaceful Warrior: A Book that Changes Lives http://en.wikipedia.org/wiki/Way_of_the_Peaceful_Warrior, by Dan Millman.
Misattributed

Michael Phelps photo

„It's not how you start, but it's how you finish.“

—  Michael Phelps American swimmer 1985

Upon winning four Gold medals after the silver medal in his first race in Rome 2009.

Albert Einstein photo

„Try to become not a man of success, but try rather to become a man of value.“

—  Albert Einstein German-born physicist and founder of the theory of relativity 1879 - 1955

As quoted by LIFE magazine (2 May 1955)
1950s
Variant: Strive not to be a success, but rather to be of value.

Albert Einstein photo

„Learn from yesterday, live for today, hope for tomorrow.“

—  Albert Einstein German-born physicist and founder of the theory of relativity 1879 - 1955

Rumi photo

„Let the beauty of what you love be what you do.“

—  Rumi Iranian poet 1207 - 1273

As quoted in Path for Greatness : Spiritualty at Work (2000) by Linda J. Ferguson, p. 51

Bruce Lee photo

„Preparation for tomorrow is hard work today.“

—  Bruce Lee Hong Kong-American actor, martial artist, philosopher and filmmaker 1940 - 1973

H. Jackson Brown, Jr. photo

„The best preparation for tomorrow is doing your best today.“

—  H. Jackson Brown, Jr. American writer 1940

Source: P.S. I Love You

Karl Popper photo
Ian Maclaren photo

„Be kind, for everyone you meet is fighting a hard battle.“

—  Ian Maclaren British theologian and writer 1850 - 1907

The British Weekly, 1897. http://quoteinvestigator.com/2010/06/29/be-kind/
Misattributed
Variant: Be pitiful, for every man is fighting a hard battle.

Euclid photo

„And the whole [is] greater than the part.“

—  Euclid, book Elements

Καὶ τὸ ὅλον τοῦ μέρους μεῖζον
ἐστιν
Elements, Book I, Common Notion 8 (5 in certain editions)
Cf. Aristotle, Metaphysics, Book Η 1045a 8–10: "… the totality is not, as it were, a mere heap, but the whole is something besides the parts … [πάντων γὰρ ὅσα πλείω μέρη ἔχει καὶ μὴ ἔστιν οἷον σωρὸς τὸ πᾶν]"
Euclid’s Elements
Original: (el) Καὶ τὸ ὅλον τοῦ μέρους μεῖζον [ἐστιν].

Samuel Goldwyn photo

„The harder I work, the luckier I get.“

—  Samuel Goldwyn American film producer (1879-1974). 1879 - 1974

Misattributed

Albert Einstein photo

„Anyone who has never made a mistake has never tried anything new.“

—  Albert Einstein German-born physicist and founder of the theory of relativity 1879 - 1955

Variant: A person who never made a mistake never tried anything new.

Kālidāsa photo
Stephen Hawking photo

„Intelligence is the ability to adapt to change.“

—  Stephen Hawking British theoretical physicist, cosmologist, and author 1942 - 2018

Amelia Earhart photo

„Women must try to do things as men have tried. When they fail, their failure must be a challenge to others.“

—  Amelia Earhart, book Last Flight

Letter to her husband George P. Putnam, on the eve of her last flight
Last Flight (1937)
Context: Please know that I am aware of the hazards. I want to do it because I want to do it. Women must try to do things as men have tried. When they fail, their failure must be a challenge to others.

Zig Ziglar photo

„There are no traffic jams on the extra mile.“

—  Zig Ziglar American motivational speaker 1926 - 2012

Today anniversaries
Adrienne Rich photo
Adrienne Rich51
American poet, essayist and feminist 1929 - 2012
Tomás Rivera photo
Tomás Rivera4
American academic 1935 - 1984
Ronnie James Dio photo
Ronnie James Dio14
American singer 1942 - 2010
Jim Henson photo
Jim Henson78
American puppeteer 1936 - 1990
Another 59 today anniversaries