To give and receive advice - the former with freedom, and yet without bitterness, the latter with patience and without irritation - is peculiarly appropriate to geniune friendship.
Perfect friendship is the friendship of men who are good, and alike in excellence; for these wish well alike to each other qua good, and they are good in themselves.
Only be admonished by what you already see, not to strike leagues of friendship with cheap persons, where no friendship can be. Our impatience betrays us into rash and foolish alliances which no God attends.
Love between man and man is impossible because there must not be sexual intercourse and friendship between man and woman is impossible because there must be sexual intercourse.
Each had his own business to think of. Each had his past shut in him like the leaves of a book known to him by heart; and his friends could only read the title.
When someone asked Abraham Lincoln, after he was elected president, what he was going to do about his enemies, he replied, "I am going to destroy them. I am going to make them my friends."