Tacitus, Dialogue on Orators
28.2 (tr. W. Peterson, rev. M. Winterbottom):
Everybody is aware that it is not for lack of votaries that eloquence and the other arts as well have fallen from their former high estate, but because of the laziness of our young men, the carelessness of parents, the ignorance of teachers, and the decay of the old-fashioned virtue.
quis enim ignorat et eloquentiam et ceteras artes descivisse ab illa vetere gloria non inopia hominum, sed desidia iuventutis et neglegentia parentum et inscientia praecipientium et oblivione moris antiqui?