Verbera servos decent, non liberos. nobilibus pueris et maxim regibus maiorum laudes ac vituperia quam verbera commoditatem magis afferunt. illae ad honesta concitant, haec a turpitudine cohibent; in utrisque tamen adhibendus est modus, ne quid nimis sit. pueri namque immodicis celebrati laudationibus intumescunt, nimiis autem affecti iurgiis franguntur animoque deficiunt. at ex plagis odia surgunt, quae ad virilem aetatem usque perdurant. discenti autem nihil magis adversum est, quam praeceptores odisse, quos tu, si recte facere volueris, non minus amabis quam ipsa studia, et parentes esse, non quidem corporis sed mentis tuae iudicabis. multum haec pietas studio confert.
(Aeneas Silvius Piccolomini, De Liberorum Educatione 10)
Blows are suitable for slaves, not free men. For noble and especially for royal boys, the praise and blame of their elders are more serviceable than their blows. The former incites them to virtuous deeds, the latter restrains them from disgraceful behavior; yet in each case, measure must be applied lest there be excess. For boys honored with unmeasured praise become arrogant, but visited with too much criticism they become broken and low-spirited. Indeed from blows arises a hatred which endures even to manhood, yet nothing is worse for a pupil than to hate his teachers. If you wish to act rightly, you should love them not less than your studies themselves, and you will consider them as the parents, not of your body, but of your mind. This devoted affection is a great aid to study. (tr. Craig W. Kallendorf)