Code should run as fast as necessary, but no faster; something important is always traded away to increase speed.

When debugging, novices insert corrective code; experts remove defective code.

Programming languages, like pizzas, come in only too sizes; too big and too small.

If you cannot grok the overall structure of a program while taking a shower, you are not ready to code it.

When teaching a rapidly changing technology, perspective is more important than content.

The three most important aspects of debugging and real estate are the same: Location, Location, and Location.

A class, in Java, is where we teach objects how to behave.

Blame is a human concept, one of its blackest and most selfish and self-binding.

No sane local official who has hung up an empty stocking over the municipal fireplace, is going to shoot Santa Claus just before a hard Christmas.

Berlin is all about volatility. Its identity is based not on stability but on change.

Some people do not become thinkers simply because their memories are too good.

Religion and science both profess peace (and the sincerity of the professors is not being doubted), but each always turns out to have a dominant part in any war that is going or contemplated.

When I started doing chemistry, I did it the way I fished - for the excitement, the discovery, the adventure, for going after the most elusive catch imaginable in uncharted seas.

My position is that we should not succumb to irrational belief.

At first we hope too much and later on, not enough.

I don't want to sound callous. I mean, even if I have nothing to offer, that doesn't matter, because that still doesn't mean that what anybody else has to offer therefore has to be true.