The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to the environment surrounding them.

It is what we know already that often prevents us from learning.

The experimenter who does not know what he is looking for will not understand what he finds.

When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.

Man can learn nothing unless he proceeds from the known to the unknown.

The terrain is everything; the germ is nothing.

Art is 'I'; science is 'we'.

A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes.

Those who do not know the torment of the unknown cannot have the joy of discovery.

Science increases our power in proportion as it lowers our pride.

All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

Don't let the storm take the wind out of your sails.

I believe it is possible that I shall make other creeds, and change this one, or add to it, from time to time, as new light may come to me.

Never globalize a problem if it can possibly be dealt with locally.

I have a lot of Breton striped top and silk shirts that always feel good. I also like things with a masculine edge and dislike anything too girly.

With all the horror in the world and all the crap that's going on, for an hour and a half you go eat some popcorn and laugh with your friends. That's what a movie is all about.

We have federal standards for everything in America except the one thing you need most - your health.

I'm more prone to anarchy than I am to control - even though I'm a film director.

Our ancient laws expressly declare that those who are but delegates themselves shall not delegate to others powers which require judgment and integrity in their exercise.

I feel sometimes an American artist must feel, like a baseball player or something - a member of a team writing American history.

Nothing shows our weakness more than to be so sharp-sighted at spying other men's faults, and so purblind about our own.