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.

One kills a man, one is an assassin; one kills millions, one is a conqueror; one kills everybody, one is a god.

I think I am one of those who can manage not to take on a completely different appearance under their own glance.

There are certain moments when we might wish the future were built by men of the past.

What scientist would not long to go on living, if only to see how the little truths he has brought to light will grow up?

To say of men that they are bad is to say they are worse than we think we are, or worse than the ideal man whose image we have built up on the basis of a certain few.

Whether man is disposed to yield to nature or to oppose her, he cannot do without a correct understanding of her language