That defense alone is effectual, sure and durable which depends upon yourself and your own valour. - Niccolò Machiavelli

he wise man should always follow the roads that have been trodden by the great, and imitate those who have most excelled, so that if he cannot reach their perfection, he may at least acquire something of its savour.

Concerning this, it should be noted that men must be either caressed or wiped out; because they will avenge minor injuries, but cannot do so for grave ones. Any harm done to a man must be of the kind that removes any fear of revenge.

...never in peaceful times stand idle..