While there's life, there is hope.

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

One cannot really argue with a mathematical theorem.

We waste time, so you don't have to.

Plagiarism saves time.

The fact that no one understands you doesn't mean you're an artist.

If time travel is possible, where are the tourists from the future?

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

Love the neighbour. But don't get caught.

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

I have experimental evidence that time travel is not possible.

I'd say I don't believe in God, but I'm afraid He might hear me.

Life would be tragic if it weren't funny.

Jesus loves you, but everyone else thinks you're an ass.

The past, like the future, is indefinite and exists only as a spectrum of possibilities.

A person who smiles in the face of adversity...probably has a scapegoat.

The universe doesn't allow perfection.

I like physics, but I love cartoons.

Look up at the stars, not down at your feet.