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

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

It matters if you just don’t give up.

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

One can’t prove that God doesn’t exist. But science makes God unnecessary. The laws of physics can explain the universe without the need for a creator.

I have experimental evidence that time travel is not possible.

Science can explain the universe without the need for a Creator.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

I like physics, but I love cartoons.

One is always a long way from solving a problem until one actually has the answer.

If you are lucky enough to find love, remember it is there and don’t throw it away.

When something is made idiot proof, they will just make better idiots.

Scientific discovery may not be better than sex, but the satisfaction lasts longer.

We only have to look at ourselves to see how intelligent life might develop into something we wouldn’t want to meet.

Intelligence is the ability to adapt to change.

What I meant by ‘we would know the mind of God’ is, we would know everything that God would know, if there were a God. Which there isn’t. I’m an atheist.

Time and space are finite in extent, but they don’t have any boundary or edge. They would be like the surface of the earth, but with two more dimensions.

I hope you realize how special you are, how your existence brings light to the people around you just like the moon and the dark night sky.

It is impossible to exist without passion.

Where am I, or what? From what causes do I derive my existence, and to what condition shall I return?

The only castle you were ever meant to live in, my child, is the one that’s always existed in your soul.

Beauty is no quality in things themselves: It exists merely in the mind which contemplates them; and each mind perceives a different beauty.

What is existence for but to be laughed at if men in their twenties have already attained the utmost?

Beauty in things exists in the mind which contemplates them

We leave something of ourselves behind when we leave a place, but we find things in us we didn’t even know existed.