...Give every man thine ear, but few thy voice:
Take each man's censure, but reserve thy judgement....
Neither a borrower nor a lender be,
For loan oft loses both itself and friend...
This above all: to thine own self be true,
And it must follow, as the night follows day,
Thou canst not then be false to any man...
Polonius' Advice to Laertes from "Hamlet" by William Shakespeare (1564 - 1616)