[20]
Be courteous in your manner, and cordial in your address. It is the part of courtesy to greet those whom you meet; and of cordiality to enter into friendly talk with them. Be pleasant to all, but cultivate the best; thus you will avoid the dislike of the former and have the friendship of the latter. Avoid frequent conversations with the same persons, and long conversations on the same subject; for there is satiety in all things.1