We may employ artifice to deceive a rival, anything against our enemies.
To mislead a rival, deception is permissable; one may use all means against his enemies.
I have never had any [enemies] other than those of the state.
First, all means to conciliate; failing that, all means to crush.
Deception is the knowledge of kings.
Carry on any enterprise as if all future success depended on it.