Genius is one percent inspiration, ninety-nine percent perspiration.
We often miss opportunity because it's dressed in overalls and looks like work.
My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.
I think computer viruses should count as life ... I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.
Whether we sleep or wake, the vast machinery of the universe still goes on.
Man cannot make principles, he can only discover them.
Primitive life is very common and intelligent life is fairly rare. Some would say it has yet to occur on earth.
That government is best which governs least.
Better fare hard with good men than feast it with bad.
But such is the irresistible nature of truth, that all it asks, and all it wants, is the liberty of appearing.
He who dares not offend cannot be honest.
My country is the world, and my religion is to do good.
Reason obeys itself; and ignorance submits to whatever is dictated to it.
It is error only, and not truth, that shrinks from inquiry.
If I do not believe as you believe, it proves that you do not believe as I believe, and that is all that it proves.
Time makes more converts than reason.
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the universe. That makes us something very special.
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.
You can't afford to be disabled in spirit as well as physically. People won't have time for you.
Nature and nature’s laws lay hid in night: god said, let newton be! and all was light.
It is no good getting furious if you get stuck
When there's life, there's hope
We are very very small. but we are profoundly capable of very very big things.
Scientists tend to risk theories they admire