When a scientist is ahead of his times, it is often through misunderstanding of current, rather than intuition of future truth. In science there is never any error so gross that it won't one day, from some perspective, appear prophetic.

Science has made us gods even before we are worthy of being men.

The nobility of a human being is strictly independent of that of his convictions.

I should have no use for a paradise in which I should be deprived of the right to prefer hell.

Kill one man, and you are a murderer. Kill millions of men, and you are a conqueror. Kill them all, and you are a god.

Somebody told me I should put a pebble in my mouth to cure my stuttering. Well, I tried it, and during a scene I swallowed the pebble. That was the end of that.

It takes a very deep-rooted opinion to survive unexpressed.