Quotes by Stephen Hawking

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

Quiet people have the loudest minds.

I deal with tough mathematical questions every day, but please don’t ask me to help with Brexit!

In my school, the brightest boys did math and physics, the less bright did physics and chemistry, and the least bright did biology. I wanted to do math and physics, but my father made me do chemistry because he thought there would be no jobs for mathematicians.

Can you hear me? It has been a glorious time to be alive and doing research in theoretical physics. Our picture of the universe has changed a great deal in the last 50 years and I'm happy if I have made a small contribution. The fact that we humans who ourselves are mere collections of fundamental particals of nature, have been able to come this close to an understanding of the laws governing us in our universe, is a great triumph. I want to share my excitement and enthusiasm about this quest. So remember to look up at the stars - and not down at your feet. Try to make sense of what you see and wonder about what makes the universe exist. Be curious! And however difficult life may seem, there is always something you can do and succeed at. It matters that you don't just give up. Thank you for listening.

No one undertakes research in physics with the intention of winning a prize. It is the joy of discovering something no one knew before.

We are all now connected by the Internet, like neurons in a giant brain.

Life would be tragic if it weren't funny.

Science is not only a disciple of reason but, also, one of romance and passion.

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

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.

Philosophy is dead. Scientists have become the bearers of the torch of discovery in our quest for knowledge.

I fear that AI may replace humans altogether. If people design computer viruses, someone will design AI that replicates itself.

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!

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

Intelligence is the ability to adapt to change.