Therefore, a prudent ruler ought not to keep faith when by so doing it would be against his interest, and when the reasons which made him bind himself no longer exist. If men were all good, this precept would not be a good one; but as they are bad, and would not observe their faith with you, so you are not bound to keep faith with them.
Niccolo MachiavelliOccasionally words must serve to veil the facts. But let this happen in such a way that no one become aware of it; or, if it should be noticed, excuses must be at hand to be produced immediately.
Niccolo MachiavelliYou must never believe that the enemy does not know how to conduct his own affairs. Indeed, if you want to be deceived less and want to bear less danger, the more the enemy is weak or the less the enemy is cautious, so much more must you esteem him.
Niccolo MachiavelliMen nearly always follow the tracks made by others and proceed in their affairs by imitation, even though they cannot entirely keep to the tracks of others or emulate the prowess of their models. So a prudent man should always follow in the footsteps of great men and imitate those who have been outstanding.
Niccolo Machiavelli