Липсата на мярка е опасна във всяка област, но в политическата кариера е направо пагубна. Тя води до явна лудост и безумие хората, облечени в голяма … - Plutarch

For it may happen to the commonwealth, as to the serpent in the fable, whose tail, rising in rebellion against the head, complained, as of a great grievance, that it was always forced to follow, and required that it should be permitted by turns to lead the way. And taking the command accordingly, it soon inflicted , by its senseless courses, mischiefs in abundance upon itself, while the head was torn and lacerated with following, contrary to nature, a guide that was deaf and blind.

Friends and kindred should be the good and virtuous [of all mankind], and that the vicious only should be accounted foreigners. Nor ... Greeks and barbarians should be distinguished by long garments, targets, scimitars, or turbans; but that the Grecians should be known by their virtue and courage, and the barbarians by their vices and their cowardice.

To learn is simply to allow something to be done to you.