"When students are lazy, teachers do not dare to scold them; when they sleep, teachers do not dare to wake them up; when they misbehave, teachers are silent; they are aware that they do not act well, but they know from experience that it is not without danger for themselves that they will chastise"

A very modern complaint about education.

From Libanius, a rhetoric teacher of the 4th century AD (Oration 43:10).