Cowards die many times before their deaths; the valiant never taste of death but once. Of all the wonders that I yet have heard. It seems to me most strange that men should fear, seeing that death, a necessary end, will come when it will come. Julius Caesar (Caesar at II, ii)
Conscience is but a word that cowards use, devis'd at first to keep the strong in awe: our strong arms be our conscience, swords our law. March on, join bravely, let us to't pell-mell; if not to heaven, then hand in hand to hell.
Assume a virtue, if you have it not. That monster, custom, who all sense doth eat, of habits devil, is angel yet in this, that to the use of actions fair and good he likewise gives a frock or livery that aptly is put on. Refrain tonight, and that shall lend a kind of easiness to the next abstinence; the next more easy; for use almost can change the stamp of nature.