We are so fond of one another, because our ailments are the same.

A friend is as it were a second self.

To feel the intimacy of brothers is a marvelous thing in life.

Plato is my friend; Aristotle is my friend, but my greatest friend is truth.

We are all full of weakness and errors; let us mutually pardon each other our follies—it is the first law of nature.

It is clear that the individual who persecutes a man, his brother, because he is not of the same opinion, is a monster.

A friend may be waiting behind a stranger's face.

I hate who steals my solitude without, in exchange, offering me true company.