Niccolò Machiavelli
Discourses on the First Decade of Titus Livius (Chap. 1.26)
A new Prince in a City or Province of which he has taken Possession, ought to make Everything new.

Whosoever becomes prince of a city or State, more especially if his position be so insecure that he cannot resort to constitutional government either in the form of a republic or a monarchy, will find that the best way to preserve his princedom is to renew the whole institutions of that State; that is to say, to create new magistracies with new names, confer new powers, and employ new men, and like David when he became king, exalt the humble and depress the great, "filling the hungry with good things, and sending the rich empty away." Moreover, he must pull down existing towns and rebuild them, removing their inhabitants from one place to another; and, in short, leave nothing in the country as he found it; so that there shall be neither rank, nor condition, nor honour, nor wealth which its possessor can refer to any but to him. And he must take example from Philip of Macedon, the father of Alexander, who by means such as these, from being a petty prince became monarch of all Greece; and of whom it was written that he shifted men from province to province as a shepherd moves his flocks from one pasture to another.

These indeed are most cruel expedients, contrary not merely to every Christian, but to every civilized rule of conduct, and such as every man should shun, choosing rather to lead a private life than to be a king on terms so hurtful to mankind. But he who will not keep to the fair path of virtue, must to maintain himself enter this path of evil. Men, however, not knowing how to be wholly good or wholly bad, choose for themselves certain middle ways, which of all others are the most pernicious, as shall be shown by an instance in the following Chapter.