I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth.

Time can behave like another direction in space under extreme conditions.

Intelligence is the ability to adapt to change.

So remember to look up at the stars and not down at your feet. Try to make sense of what you see and hold on to that childlike wonder about what makes the universe exist.

The thing about smart people is that they seem like crazy people to dumb people.

It is all right to make mistakes; nothing is perfect because with perfection, we would not exist.

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.

People won't have time for you if you are always angry or complaining.

It is reasonable to ask who or what created the universe, but if the answer is God, then the question has merely been deflected to that of who created God.

It is very important for young people keep their sense of wonder and keep asking why.

The development of full artificial intelligence could spell the end of the human race.

How obvious can it be? ... The purpose of makeup is to defy the degradations of time, and time is just a synonym for death.

In a moment everything could suddenly change, but God and His promises remain the same.

An actual artist, living right under her nose.

Frequently on the lunar surface I said to myself, 'This is the Moon, that is the Earth. I'm really here, I'm really here!'

Remember like where you’ve come from. Know who you are.

A true Leader asks advice, when he has time to think; but he never asks advice in a crisis. He acts.

It is not wise for a man who can get seasick in a rowboat on a mill-pond to attack a Japanese dinner just after a seventeen days voyage across the Pacific.

I'm just sittin here trying not to be unhappy.

The black man in Africa had mastered the arts and sciences. He knew the course of the stars in the universe before the man up in Europe knew that the earth wasn't flat.

Maybe there is a beast… maybe it's only us.