Intercourse with the right people works well; manners and taste are shared, good sense and even talent grow insensibly. Let the impatient person then make a comrade of the sluggish, and so with the other temperaments, so that without forcing it the golden mean is obtained. It is a great art to agree with others. The alteration of contraries beautifies and sustains the world, and if it can cause harmony in the physical world, still more it can do so in the moral. Adopt this policy in the choice of friends and defendants-by joining extremes the more effective middle way is found.