Stephen Hawking
The world has changed far more in the past 100 years than in any other century in history. The reason is not political or economic but technological-technologies that flowed directly from advances in basic science. Clearly, no scientist better represents those advances than Albert Einstein: TIME's Person of the Century.Collection: Past
I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars.Collection: Stars
I don't know what my IQ is. People who gloat about their IQ's are losersCollection: People
We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.Collection: Years
There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.Collection: Dark
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.Collection: Life
There could be whole antiworlds and antipeople made out of antiparticles. However, if you ever meet your antiself, don't shake hands! You would both vanish in a great flash of light.Collection: Science
You cannot understand the glories of the universe without believing there is some Supreme Power behind it.Collection: Believe
I'm here to chew gum and kick some ass, and I'm all out of gum.Collection: Gum
What could define God, [is thinking of God] as the embodiment of the laws of nature. However, this is not what most people would think of that God. They made a human-like being with whom one can have a personal relationship. When you look at the vast size of the universe and how insignificant an accidental human life is in it, that seems most impossible.Collection: Thinking
I like physics, but I love cartoons.Collection: Cartoon
The human race does not have a very good record of intelligent behavior.Collection: Intelligent
I don't believe that the ultimate theory will come by steady work along existing lines. We need something new. We can't predict what that will be or when we will find it because if we knew that, we would have found it already!Collection: Believe
When two's company, three's the result!Collection: Two
It often happens that I have an idea, but then I try to fill in the intermediate steps and find they don't work, so I have to give it up.Collection: Ideas
I thought Eddie Redmayne portrayed me very well... At times I thought he was me.Collection: Wells
Science makes God unnecessary.Collection: Unnecessary
Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.Collection: Matter
I believe in the possible. I believe, small though we are, insignificant though we may be, we can reach a full understanding of the universe. You were right when you said you felt small, looking up at all that up there. We are very, very small, but we are profoundly capable of very, very big things.Collection: Believe
I put a lot of effort into writing 'A Briefer History' at a time when I was critically ill with pneumonia because I think that it's important for scientists to explain their work, particularly in cosmology. This now answers many questions once asked of religion.Collection: Writing
When I get to heaven I'm gonna find the guy in charge of the weather and kick his rear.Collection: Weather
More often than politicians, but not as often as they should.Collection: Science
Computer viruses are alive.Collection: Viruses
In real time, the universe has a beginning and an end at singularities that form a boundary to space-time and at which the laws of science break down.Collection: Real
Maybe my variety is due to bad absorption of vitamins.Collection: Vitamins
What you have told us is rubbish. The world is really a flat plate supported on the back of a giant tortoise.Collection: Giants
The Universe in a NutshellCollection: Universe
If any one of about 40 physical qualities had more than slightly different values, life as we know it could not exist.Collection: Quality
Perhaps we could write code to optimize code, then run that code through the code optimizer?Collection: Running
Don't be disabled in spirit as well as physically.Collection: Regret
We explore because we are human and we want to know. I hope that Pluto will help us on that journey.Collection: Humans
One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there and don’t throw it away.Collection: Philosophy
I am just a child who has never grown up. I still keep asking these ‘how’ and ‘why’ questions. Occasionally, I find an answer.Collection: Children
I’m not afraid of death, but I’m in no hurry to die. I have so much I want to do first.Collection: Firsts
Whether you want to uncover the secrets of the universe, or you just want to pursue a career in the 21st century, basic computer programming is an essential skill to learn.Collection: Careers
My first popular book, ‘A Brief History of Time,’ aroused a great deal of interest, but many found it difficult to understand.Collection: Firsts
If at first you don’t succeed, try management.Collection: Firsts
Do you believe in first love – or should I pass by again?Collection: Firsts