There will be but few people who, when at a loss for topics of conversation, will not reveal the more secret affairs of their friends.

Go up close to your friend, but do not go over to him! We should also respect the enemy in our friend.

Friendship with the upright, with the truthful and with the well informed is beneficial. Friendship with those who flatter, with those who are meek and who compromise with principles, and with those who talk cleverly is harmful.

Look at market fluctuations as your friend rather than your enemy; profit from folly rather than participate in it.

There is no possession more valuable than a good and faithful friend.

Our faith in others betrays that we would rather have faith in ourselves. Our longing for a friend is our betrayer. And often with our love we want merely to overcome envy. And often we attack and make ourselves enemies, to conceal that we are vulnerable.