I am firmly convinced, therefore, that to set up a republic which is to last a long time, the way to set about it is to constitute it as Sparta and Venice were constituted; to place it in a strong position, and so to fortify it that no one will dream of taking it by a sudden assault; and, on the other hand, not to make it so large as to appear formidable to its neighbors. It should in this way be able to enjoy its form of government for a long time. For war is made on a commonwealth for two reasons: to subjugate it, and for fear of being subjugated by it.
Niccolo MachiavelliThus it is well to seem merciful, faithful, humane, sincere, religious, and also to be so; but you must have the mind so disposed that when it is needful to be otherwise you may be able to change to the opposite qualities.
Niccolo MachiavelliA prince being thus obliged to know well how to act as a beast must imitate the fox and the lion, for the lion cannot protect himself from snares, and the fox cannot defend himself from wolves.
Niccolo MachiavelliAnd it will always happen that he who is not your friend will request your neutrality and he who is your friend will ask you to declare yourself by taking up arms. And irresolute princes, in order to avoid present dangers, follow the neutral road most of the time, and most of the time they are ruined.
Niccolo Machiavelli