Man is a masterpiece of creation if for no other reason than that, all the weight of evidence for determinism notwithstanding, he believes he has free will.

Some theories are good for nothing except to be argued about.

Imagine the world so greatly magnified that particles of light look like twenty-four-pound cannon balls.

Nothing reveals a man's character better than the kind of joke at which he takes offense.

There is no greater impediment to progress in the sciences than the desire to see it take place too quickly.

Ambition and suspicion always go together.

An hour-glass is a reminder not only of time's quick flight, but also of the dust to which we must at last return