“One of the greatest pieces of economic wisdom is to know what you do not know.”

“The greatest wisdom consists in knowing one's own follies.”

“Wisdom is knowing what to do with what you know.”

“The greatest wisdom doesn't know itself. The richest plan is not to have one.”

“For the fear of death is indeed the pretense of wisdom, and not real wisdom, being a pretense of knowing the unknown; and no one know whether death, which men in their fear apprehend to be the greatest evil, may not be the greatest good. Is not this ignorance of a disgraceful sort, the ignorance which is the conceit that a man knows that he does not know? And in this respect only I believe myself to differ from men in general, and may perhaps claim to be wiser than they are: that whereas I know but little of the world below, I do not suppose that I know...”

“Wisdom is knowing what to do next; Skill is knowing how to do it, and Virtue is doing it.”