Stephen Hawking: Trending quotes (page 2)

“The Steady State theory was what Karl Popper would call a good scientific theory: it made definite predictions, which could be tested by observation, and possibly falsified. Unfortunately for the theory, they were falsified.”

Stephen Hawking

The Beginning of Time (1996)

“We are each free to believe what we want and it is my view that the simplest explanation is there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization. There is probably no heaven, and no afterlife either. We have this one life to appreciate the grand design of the universe, and for that, I am extremely grateful.”

Stephen Hawking

Quoted from the Discovery Channel, 15 August 2011.
"Stephen Hawking There is no God. There is no Fate." from episode 1 https://www.youtube.com/watch?v=7L7VTdzuY7Y · [Curiosity: Did God Create the Universe?, http://dsc.discovery.com/tv-shows/curiosity/topics/did-god-create-the-universe.htm, Discovery Communications, LLC., 7 August 2011, 4 July 2013]
Curiosity (2011)

Life , God , Fate , Quotes

“The life we have on Earth must have spontaneously generated itself. It must therefore be possible for life to generate spontaneously elsewhere in the universe.”

Stephen Hawking

From an appearance in the Discovery Channel program Alien Planet (14 May 2005)

Life , Universe

“Maybe that is our mistake: maybe there are no particle positions and velocities, but only waves. It is just that we try to fit the waves to our preconceived ideas of positions and velocities. The resulting mismatch is the cause of the apparent unpredictability.”

Stephen Hawking book A Brief History of Time

Source: A Brief History of Time (1988), Ch. 12

Idea

“When I gave a lecture in Japan, I was asked not to mention the possible re-collapse of the universe, because it might affect the stock market. However, I can re-assure anyone who is nervous about their investments that it is a bit early to sell: even if the universe does come to an end, it won't be for at least twenty billion years. By that time, maybe the GATT trade agreement will have come into effect.”

Stephen Hawking

The Beginning of Time (1996)

Universe , Time

“We should seek the greatest value of our action.”

Stephen Hawking

Response to a question on how we should live, in an interview with The Guardian (15 May 2011)

“I think that it's important for scientists to explain their work, particularly in cosmology. This now answers many questions once asked of religion.”

Stephen Hawking

As quoted in "Return of the time lord" in The Guardian (27 September 2005)

Religion , Question , Thinking

“All my life, I have been fascinated by the big questions that face us, and have tried to find scientific answers to them.”

Stephen Hawking

From the 1997 television program Stephen Hawking's Universe http://www.pbs.org/wnet/hawking/html/home.html
Unsourced variant: All of my life, I have been fascinated by the big questions that face us, and have tried to find scientific answers to them. Perhaps that is why I have sold more books on physics than Madonna has on sex. This quote seems to combine the above sentence from Stephen Hawking's Universe with a statement from the Foreword to The Illustrated Brief History of Time: As Nathan Myhrvold of Microsoft (a former post-doc of mine) remarked: I have sold more books on physics than Madonna has on sex.

Life , Question

“Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.”

Stephen Hawking

Interview "Colonies in space may be only hope, says Hawking" by Roger Highfield in Daily Telegraph (16 October 2001) http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2001/10/16/nhawk16.xml&sSheet=/news/2001/10/16/ixhome.html

“Mathematics is more than a tool and language for science. It is also an end in itself, and as such, it has, over the centuries, affected our worldview in its own right.”

Stephen Hawking book God Created the Integers

Preface
God Created the Integers (2007)

Mathematics , Science

“It is a waste of time to be angry about my disability. One has to get on with life and I haven't done badly. People won't have time for you if you are always angry or complaining.”

Stephen Hawking

As quoted in "Return of the time lord" in The Guardian (27 September 2005)

Life , People , Time

“There ought to be something very special about the boundary conditions of the universe and what can be more special than that there is no boundary?”

Stephen Hawking

As quoted in The Anthropic Cosmological Principle (1986) by John D. Barrow and Frank J. Tipler. p. 444

Universe

“Bodies like the earth are not made to move on curved orbits by a force called gravity; instead, they follow the nearest thing to a straight path in a curved space, which is called a geodesic. A geodesic is the shortest (or longest) path between two nearby points.”

Stephen Hawking book A Brief History of Time

Source: A Brief History of Time (1988), Ch. 2

“[on the possibility of contact with an alien civilization]: I think it would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.”

Stephen Hawking

Appearance in the National Geographic Channel program Naked Science: Alien Contact, as quoted in The New York Times (24 November 2004) http://query.nytimes.com/gst/fullpage.html?res=9C00E2D8173EF937A15752C1A9629C8B63&sec=&spon= and a CNN transcript of an interview with Seth Shostak from Anderson Cooper 360 (26 November 2004) http://transcripts.cnn.com/TRANSCRIPTS/0411/26/acd.01.html

People , History , Thinking , Happiness

“The development of full artificial intelligence could spell the end of the human race. We cannot quite know what will happen if a machine exceeds our own intelligence, so we can't know if we'll be infinitely helped by it, or ignored by it and sidelined, or conceivably destroyed by it.”

Stephen Hawking

BBC (2 December 2014) http://www.bbc.com/news/technology-30290540

Intelligence , Help

“I now predict that I was wrong.”

Stephen Hawking

Attributed in the movie The Theory of Everything (2014)
Attributed

“If we do discover a complete theory, it should in time be understandable in broad principle by everyone, not just a few scientists. Then we shall all, philosophers, scientists, and just ordinary people, be able to take part in the discussion of the question of why it is that we and the universe exist. If we find the answer to that, it would be the ultimate triumph of human reason — for then we would know the mind of God.”

Stephen Hawking book Black Holes and Baby Universes and Other Essays

Last lines. Hawking later wrote: "In the proof stage I nearly cut the last sentence in the book... Had I done so, the sales might have been halved.
Black Holes and Baby Universes and Other Essays (1993)

God , People , Understanding , Question

“Equations are just the boring part of mathematics. I attempt to see things in terms of geometry.”

Stephen Hawking

As quoted in Stephen Hawking: A Biography (2005) by Kristine Larsen, p. 43

Mathematics , Parting

“I'm sorry to disappoint science fiction fans, but if information is preserved, there is no possibility of using black holes to travel to other universes. If you jump into a black hole, your mass energy will be returned to our universe but in a mangled form which contains the information about what you were like but in a state where it can not be easily recognized. It is like burning an encyclopedia. Information is not lost, if one keeps the smoke and the ashes. But it is difficult to read. In practice, it would be too difficult to re-build a macroscopic object like an encyclopedia that fell inside a black hole from information in the radiation, but the information preserving result is important for microscopic processes involving virtual black holes.”

Stephen Hawking

"Information Loss in Black Holes" http://arxiv.org/abs/hep-th/0507171 (July 2005)

Disappointment , Travel , Universe , Science

“The Dreams that Stuff is Made of”

Stephen Hawking

Title of a collection, by Hawking, of the most significant papers in Quantum mechanics: The Dreams That Stuff Is Made of : The Most Astounding Papers of Quantum Physics and How They Shook the Scientific World (2011)

Dreams