A lie never lives to be old.

Certainty? In this world nothing is certain but death and taxes.

I am only one, but still I am one. I cannot do everything, but still I can do something; and because I cannot do everything, I will not refuse to do something that I can do.

If the only prayer you said was thank you, that would be enough.

There is nothing more miserable in the world than to arrive in paradise and look like your passport photo.

All battles are fought by scared men who'd rather be some place else.

I love deadlines. I like the whooshing sound they make as they fly by.

If everything isn't black and white, I say, 'Why the hell not?'

There's real poetry in the real world. Science is the poetry of reality

Unless someone like you cares a whole awful lot, nothing is going to get better. It's not.

I've been looking for a girl like you - not you, but a girl like you.

Time means a lot to me because you see I am also a learner and am often lost in the joy of forever developing.

I'm not a genius. I'm just a tremendous bundle of experience.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

If you've got them by the balls their hearts and minds will follow.

The right of a nation to kill a tyrant in case of necessity can no more be doubted than to hang a robber, or kill a flea.

Worry is the interest paid by those who borrow trouble.

The bat thought I was giving him the kiss of life!

If you never stop when you wave goodbye you just might find, if you give it time, you will wave hello again...

I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.

Be that self which one truly is.