Machiavelli - The Prince
Let him (prince) act like the clever archers who, designing to hit the mark which yet appears too far distant, and knowing the limits to which the strength of their bow attains, take aim much higher than the mark, not to reach by their strength or arrow to so great a height, but to be able with the aid of so high an aim to hit the mark they wish to reach.
In conclusion, the arms of others either fall from your back, or they weigh you down, or they bind you fast.
I conclude, therefore, that no principality is secure without having its own forces; on the contrary, it is entirely dependent on good fortune, not having the valour which in adversity would defend it.
A wise prince ought to observe some such rules, and never in peaceful times stand idle, but increase his resources with industry in such a way that they may be available to him in adversity, so that if fortune chances it may find him prepared to resist her blows.
it is unnecessary for a prince to have all the good qualities I have enumerated, but it is very necessary to appear to have them.
a wise prince, when he has the opportunity, ought with craft to foster some animosity against himself, so that, having crushed it, his renown may rise higher.
Because there are three classes of intellects: one which comprehends by itself; another which appreciates what others comprehended; and a third which neither comprehends by itself nor by the showing of others; the first is the most excellent, the second is good, the third is useless.
a wise prince ought to hold a third course by choosing the wise men in his state, and giving to them only the liberty of speaking the truth to him, and then only of those things of which he inquires, and of none others; but he ought to question them upon everything, and listen to their opinions, and afterwards form his own conclusions.