For this is the tragedy of man circumstances change, but he does not.

Only those means of security are good, are certain, are lasting, that depend on yourself and your own vigor.

War is just when it is necessary; arms are permissible when there is no hope except in arms.

Men are driven by two principal impulses, either by love or by fear.

Impetuosity and audacity often achieve what ordinary means fail to achieve.

The vulgar crowd always is taken by appearances, and the world consists chiefly of the vulgar.

A prince must not have any other object nor any other thought… but war, its institutions, and its discipline; because that is the only art befitting one who commands.