For many people, one of the most frustrating aspects of life is not being able to understand other people's behavior.

Originality provokes originality.

Each ten years of a man's life has its own fortunes, its own hopes, its own desires.

The world of empirical morality consists for the most part of nothing but ill will and envy.

He who is resolute conquers grief.

I have always paid attention to the merits of my enemies, and found it an advantage.

The loss of a much-prized treasure is only half felt when we have not regarded its tenure as secure.