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If a man does not make new acquaintances as he advances through life, he will soon find himself left alone. A man, sir, should keep his friendship in a constant repair.

Under the influence of fear, which always leads men to take a pessimistic view of things, they magnified their enemies' resources, and minimized their own.

Friendship with a man is friendship with his virtue.

An enemy to whom you show kindness becomes your friend, excepting lust, the indulgence of which increases its enmity.

As in political so in literary action a man wins friends for himself mostly by the passion of his prejudices and the consistent narrowness of his outlook.

A friend is one who has the same enemies as you have.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

Treat your friend as if he might become an enemy.

Depend on no man, on no friend but him who can depend on himself. He only who acts conscientiously toward himself, will act so toward others.