To speak less of oneself than what one really is, is folly, not modesty; and to take that for current pay which is under a man's value, is pusillanimity and cowardice.
Michel de MontaigneIn truth, knowledge is a great and very useful quality; those who despise it give evidence enough of their stupidity. Yet I do not set its value at that extreme measure that some attribute to it.
Michel de Montaigne