3
There are chiefly these requisites to a true friendship: virtue, as a thing lovely and desirable; familiarity, as pleasant; and advantage, as necessary. For we must first choose a friend upon a right judgment made of his excellent qualities; having chosen him, we must perceive a pleasure in his conversation, and upon occasion he must be useful to us in our concerns. All which (especially judgment in our choice, the main point of all) are inconsistent with a numerous acquaintance.
