12 Stephen Hawking quotes reveal how a genius thinks

When he was 21, Stephen Hawking was diagnosed with motor neurone disease.
Doctors told him he had a few years to live.

He's now 72 and one of the foremost physicists alive — a professor at the University of Cambridge, an investigator of black holes, and the author of bestselling book "A Brief History of Time".

Here are a dozen quotes showing Hawking's approach to science and to life.

1) On disability

My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit, as well as physically.

2) On priorities

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

3) On free will

I have noticed that even people who claim everything is predetermined and that we can do nothing to change it, look before they cross the road.

4) On humour

Life would be tragic if it weren't funny.

5) On his IQ

I have no idea. People who boast about their IQ are losers.

6) On what he thinks about the whole day

Women. They are a complete mystery.


Stephen Hawking during the premiere of "A Brief History of Time" (Getty Images)

7) His advice to his three children

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.

8) On why he writes for a popular audience

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.

9) On the value of string theory

When we understand string theory, we will know how the universe began. It won have much effect on how we live, but it is important to understand where we come from and what we can expect to find as we explore.

10) On his health

When I was first diagnosed with ALS, I was given two years to live. Now 45 years later, I am doing pretty well.

11) On God

God may exist, but science can explain the universe without a need for a creator.

12) On hitting roadblocks

It is no good getting furious if you get stuck. What I do is keep thinking about the problem but work on something else. Sometimes it is years before I see the way forward. In the case of information loss and black holes, it was 29 years.

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