Letter 4: To Antipater (6)

For it stands to reason that it is because of those who always and by choice speak to please that not only monarchies cannot endure—since monarchies are liable to numerous inevitable dangers—but even constitutional governments as well, though they enjoy greater security: whereas it is owing to those who speak with absolute frankness in favor of what is best that many things are preserved even of those which seemed doomed to destruction. For these reasons it is indeed fitting that in the courts of all monarches those who declare the truth should be held in greater esteem than those who, though they aim to gratify in all they say, yet say naught that merits gratitude; in fact, however, the former find less favor with some princes.