History is the science of people.

The individual point of view is the only point of view from which one is able to look at the world in its truth.

The masses think that is is easy to flee from reality, when it is the most difficult thing in the world.

The heart of man does not tolerate an absence of the excellent and supreme.

The difficulties which I meet with in order to realize my existence are precisely what awaken and mobilize my activities, my capacities.

I am I plus my surroundings; and if I do not preserve the latter, I do not preserve myself.

The librarian's mission should be, not like up to now, a mere handling of the book as an object, but rather a know how (mise au point) of the book as a vital function.