The first quality of the commander-in-chief is a cool head to receive a correct impression of things. He should not allow himself to be confused by either good or bad news.
The most important quality for an investor is temperament, not intellect. You need a temperament that neither derives great pleasure from being with the crowd or against the crowd.
My good qualities are under your protection, and you are to exaggerate them as much as possible; and, in return, it belongs to me to find occasion for teasing and quarreling with you as often as may be.