There are amongst men several sorts of reasonings, good and bad. Admire them not too easily and reject them not either, but if any falsehoods be advanced, give way with mildness and arm thyself with patience.
Observe well, on every occasion, what I am going to tell thee: Let no man either by his words, or by his actions, ever seduce thee, nor entice thee to say or to do what is not beneficial for thee.
Consult and deliberate before thou act, that thou may’st not commit foolish actions, for it is the part of a miserable man to speak and to act without reflection.
Taken from the Golden Verses Pythagoras