In real time, the universe has a beginning and an end at singularities that form a boundary to space-time and at which… — Stephen Hawking Copy Share Image
“In the early universe—when the universe was small enough to be governed by both general relativity and quantum theory—there were effectively four… — Stephen Hawking Copy Share Image
Before 1915, space and time were thought of as a fixed arena in which events took place, but which was not affected… — Stephen Hawking Copy Share Image
“time and space are intertwined. It is something like adding a fourth direction of future/past to the usual left/right, forward/backward, and up/down.… — Stephen Hawking Copy Share Image
Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that… — Stephen Hawking Copy Share Image
The doctor who diagnosed me with ALS, or motor neuron disease, told me that it would kill me in two or three years. — Stephen Hawking Copy Share
The human race does not have a very good record of intelligent behavior. — Stephen Hawking Copy Share
“We have finally found something that doesn’t have a cause, because there was no time for a cause to exist in. For me this… — Stephen Hawking Copy Share
[On President Bush's plan to get to Mars in 10 years] Stupid. Robots would do a better job and be much cheaper because you… — Stephen Hawking Copy Share
I believe the simplest explanation is, there is no God. No one created the universe and no one directs our fate. This leads me… — Stephen Hawking Copy Share
The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time. — Stephen Hawking Copy Share
Most sets of values would give rise to universes that, although they might be very beautiful, would contain no one able to wonder at… — Stephen Hawking Copy Share
There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win… — Stephen Hawking Copy Share
“In the eighteenth century, philosophers considered the whole of human knowledge, including science, to be their field and discussed questions such as: Did the… — Stephen Hawking Copy Share
A model is a good model if first it interprets a wide range of observations in terms of a simple and elegant model, and… — Stephen Hawking Copy Share
“Empedocles noticed that if you cover the neck before you immerse it, a clepsydra does not fill. He reasoned that something invisible must be… — Stephen Hawking Copy Share
The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping the basket until… — Stephen Hawking Copy Share
I hope I have helped to raise the profile of science and to show that physics is not a mystery but can be understood… — Stephen Hawking Copy Share
