Men are either to be kindly treated, or utterly crushed, since they can revenge lighter injuries, but not graver. Wherefore the injury we do to a man… - Niccolò Machiavelli

And let it here be noted that men are either to be kindly treated, or utterly crushed, since they can revenge lighter injuries, but not graver.

When evening comes, I return home and enter my study; on the threshold I take off my workday clothes, covered with mud and dirt, and put on the garments of court and palace. Fitted out appropriately, I step inside the venerable courts of the ancients, where, solicitously received by them, I nourish myself on that food that alone is mine and for which I was born; where I am unashamed to converse with them and to question them about the motives for their actions, and they, out of their human kindness, answer me. And for four hours at a time I feel no boredom, I forget all my troubles, I do not dread poverty, and I am not terrified by death. I absorb myself into them completely.

Titus Livius... observes, “Most wholesome is it that in affairs of great moment, supreme authority be vested in one man.” Very different, however, is the course followed by the republics and princes of our own days, who, thinking to be better served, are used to appoint several captains or commissioners to fill one command; a practice giving rise to so much confusion, that were we seeking for the causes of the overthrow of the French and Italian armies in recent times, we should find this to be the most active of any.
Rightly, therefore, may we conclude that in sending forth an army upon service, it is wiser to entrust it to one man of ordinary prudence, than to two of great parts but with a divided command.

Therefore any cruelty has to be executed at once, so that the less it is tasted, the less it offends; while benefits must be dispensed little by little, so that they will be savored all the more.