Some, merely to contradict what I had said, did not scruple to cast doubt upon things they had seen with their own eyes again and again.

Measure what can be measured, and make measurable what cannot be measured.

All truths are easy to understand once they are discovered; the point is to discover them.

I have never met a man so ignorant that I couldn't learn something from him.

The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.

I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forego their use.

The laws of nature are written by the hand of God in the language of mathematics.

Knowing thyself, that is the greatest wisdom.

To understand the Universe, you must understand the language in which it's written, the language of Mathematics.

In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man.

To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.

I hate pain, despite my ability to tolerate it beyond all known parameters, which is not necessarily a good thing.

Indeed, man has two different beings inside him. What devil thought of that malicious touch?

At times everything grows misty and dark before my eyes, and I feel that the strength of my whole body is oozing away through my finger tips.

I go home by noon, and I'm in bed by 6 p.m. I get up at 1 and do it again.

I don't think I would've ever dared dreaming of becoming a professional cartoonist. I wouldn't set myself up for that disappointment.

People don't change just because you know more about them.

Money is just another word for power.

You learn by writing short stories. Keep writing short stories. The money's in novels, but writing short stories keeps your writing lean and pointed.

doing and being are very closely tied together, and unless you are doing what you secretly want to do, you aren't able to be the sort of person you want to be.

I grew up my whole life in Ireland and obviously sound very, very Irish. I feel like it's just one of those things that just charms the socks off of people.