An idea is always a generalization, and generalization is a property of thinking. To generalize means to think.

Governments have never learned anything from history, or acted on principles deducted from it.

The first glance at History convinces us that the actions of men proceed from their needs, their passions, their characters and talents; and impresses us with the belief that such needs, passions and interests are the sole spring of actions.

Destiny is consciousness of oneself, but consciousness of oneself as an enemy.

The more certain our knowledge the less we know.

World history is a court of judgment.

Philosophy is by its nature something esoteric, neither made for the mob nor capable of being prepared for the mob.