Stephen Hawking

It is very difficult to understand why in this world so many people have so little.

The universe is under no obligation to make sense to you.

I always wonder why birds choose to stay in the same place when they have wings.

The important thing is not to stop questioning. Curiosity has its own reason for existing.

We must learn to live together as brothers or perish together as fools.

The future of humanity is going to hinge on whether we can harness the power of AI for good.

It is all right to make mistakes; nothing is perfect.

The more I learn, the more I realize how much I don't know.

Gravity is a force that pulls objects together. It keeps us on the ground and makes apples fall from trees.

The heart of the internet is the network of servers and routers that connect computers around the world.

I believe in the possibility of a positive outcome for humanity.

My work on black holes has taught me that the universe is full of surprises.

We live in a universe governed by the laws of science.

The big question is whether the universe is eternal or had a beginning.

Quantum mechanics and general relativity are both successful theories, but they don't fit together.

The theory of everything would unify all the laws of physics.

Black holes are where God divided by zero.

The universe is not only queerer than we suppose, but queerer than we can suppose.

I think the brain is like a program in the mind, which is like a computer.

The odds against life appearing on Earth are a billion to one, but it happened.