I consider it a mark of great prudence in a man to abstain from threats or any contemptuous expressions, for neither of these weaken the enemy, but threats make him more cautious, and the other excites his hatred, and a desire to revenge himself. – Niccolo Machiavelli
Prudence operates on life in the same manner as rule of composition; it produces vigilance rather than elevation; rather prevents loss than procures advantage; and often miscarriages, but seldom reaches either power or honor. – Samuel Johnson
When an action is once done, it is right or wrong for ever no accidental failure of its good or evil fruits can possibly alter that. – William Kingdon Clifford
