Good company requires only birth, education, and manners, and with regard to education is not very nice. Birth and good manners are essential; but a little learning is by no means a dangerous thing in good company; on the contrary, it will do very well.
The man who backbites an absent friend, nay, who does not stand up for him when another blames him, the man who angles for bursts of laughter and for the repute of a wit, who can invent what he never saw, who cannot keep a secret -- that man is black at heart: mark and avoid him.
Friends are an aid to the young, to guard them from error; to the elderly, to attend to their wants and to supplement their failing power of action; to those in the prime of life, to assist them to noble deeds.
If your friend has displeased you, you shall not sit down to consider it, for he has already lost all memory of the passage, and has doubled his power to serve you, and, ere you can rise up again, will burden you with blessings.