Science is a collection of successful recipes.

What Degas called 'a way of seeing' must consequently bear a wide enough interpretation to include way of being, power, knowledge, and will.

Nothing is more natural than mutual misunderstanding; the contrary is always surprising. I believe that one never agrees on anything except by mistake, and that all harmony among human beings is the happy fruit of an error.

History is the science of things which are not repeated.

What one wrote playfully, another reads with tension and passion; what one wrote with tension and passion, another reads playfully.

In most cases, when the lion, weary of obeying its master, has torn and devoured him, its nerves are pacified and it looks round for another master before whom to grovel.

The dog has made man their God, if the dog was an atheist, it would be perfect.