A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.

Every man is guilty of all the good he did not do.

The power is in the balance: we are our injuries, as much as we are our successes.

Psychology must be based on direct experience, not inference.

一个好的决策是基于知识而非数字。