It is not a lack of love, but a lack of friendship that makes unhappy marriages.

Love is blind; friendship closes its eyes.

There would be more good marriages if the marriage partners didn't live together.

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

Women can form a friendship with a man very well; but to preserve it - to that end a slight physical antipathy must probably help.

Compassion for the friend should conceal itself under a hard shell