There is nothing more difficult to plan, more doubtful of success, nor more dangerous to manage than the creation of a new order of things..... Whenever his enemies have occasion to attack the innovator they do so with the passion of partisans, while the others defend him sluggishly so that the innovator and his party alike are vulnerable.
Niccolo MachiavelliI hold it to be of great prudence for men to abstain from threats and insulting words towards any one, for neither the one nor the other in any way diminishes the strength of the enemy; but the one makes him more cautious, and the other increases his hatred of you, and makes him more persevering in his efforts to injure you
Niccolo MachiavelliAnd the prince who has relied solely on their words, without making other preparations, is ruined, for the friendship which is gained by purchase and not through grandeur and nobility of spirit is merited but is not secured, and at times is not to be had.
Niccolo Machiavelli