Habit is stronger than reason.
The fact of having been born is a bad augury for immortality.
To turn events into ideas is the function of literature.
Old age is as forgetful as youth, and more incorrigible; it displays the same inattentiveness to conditions; its memory becomes self-repeating and degenerates into an instinctive reaction, like a bird's chirp.
Self-assurance is contemptible and fatal unless it is self-knowledge.
Nietzsche said that the earth has been a madhouse long enough. Without contradicting him we might perhaps soften the expression, and say that philosophy has been long enough an asylum for enthusiasts.