Words had to change their ordinary meaning and to take that which was now given them. Reckless audacity came to be considered the courage of a loyal ally; prudent hesitation, specious cowardice; moderation was held to be a cloak for unmanliness; ability to see all sides of a question inaptness to act on any. Frantic violence, became the attribute of manliness; cautious plotting, a justifiable means of self-defence. The advocate of extreme measures was always trustworthy; his opponent a man to be suspected. To succeed in a plot was to have a shrewd head, to divine a plot still shrewder; but to try to provide against having to do either was to break up your party and to be afraid of your adversaries. In fine, to forestall an intending criminal, or to suggest the idea of a crime where it was wanting, was equally commended, until even blood became a weaker tie than party, from the superior readiness of those united by the latter to dare everything without reserve; for such associations had not in view the blessings derivable from established institutions but were formed by ambition for their overthrow; and the confidence of their members in each other rested less on any religious sanction than upon complicity in crime. The fair proposals of an adversary were met with jealous precautions by the stronger of the two, and not with a generous confidence. Revenge also was held of more account than self-preservation. Oaths of reconciliation, being only proffered on either side to meet an immediate difficulty, only held good so long as no other weapon was at hand; but when opportunity offered, he who first ventured to seize it and to take his enemy off his guard, thought this perfidious vengeance sweeter than an open one, since, considerations of safety apart, success by treachery won him the palm of superior intelligence. Indeed it is generally the case that men are readier to call rogues clever than simpletons honest, and are as ashamed of being the second as they are proud of being the first. The cause of all these evils was the lust for power arising from greed and ambition; and from these passions proceeded the violence of parties once engaged in contention. 

Thucydides, The Peloponnesian War, 3.82

"Therefore trust the physician, and drink his remedy in silence and tranquility: For his hand, though heavy and hard, is guided by the tender hand of the Unseen,

And the cup he brings, though it burn your lips, has been fashioned of the clay which the Potter has moistened with His own sacred tears.”

-Khalil Gibran

"...The children of the light must be armed with the wisdom of the children of darkness but remain free from their malice. They must know the power of self-interest in human society without giving it moral justification. They must have this wisdom in order that they may beguile, deflect, harness and restrain self-interest, individual and collective, for the sake of the community." - Reinhold Niebuhr, The Children of the Light and the Children of Darkness: A Vindication of Democracy and a Critique of Its Traditional Defense, 1944