Peace is not in itself a dream, but we know it only as the result of a momentary equilibrium--an accident.

Every situation is an equilibrium of forces; every life is a struggle between opposing forces working within the limits of a certain equilibrium

Common sense is the measure of the possible; it is composed of experience and prevision; it is calculation applied to life.

Doing easily what others find difficult is talent; doing what is impossible for talent is genius.

Clever people will recognize and tolerate nothing but cleverness.

Philosophy starts with doubt and loves only truth.

Obstinacy is will asserting itself without being able to justify itself. It is persistence without a reasonable motive. It is the tenacity of self-love substituted for that of reason and conscience.