Tertullian

“ Learning literature is allowable for believers, rather than teaching; for the principle of learning and of teaching is different. If a believer teach literature, while he is teaching doubtless he commends, while he delivers he affirms, while he recalls he bears testimony to, the praises of idols interspersed therein. ”

“ Hence the devil gets men’s early faith built up from the beginnings of their erudition. Inquire whether he who catechizes about idols commit idolatry. But when a believer learns these things, if he is already capable of understanding what idolatry is, he neither receives nor allows them; much more if he is not yet capable. ”

“ The very first payment of every pupil he consecrates both to the honour and to the name of Minerva; so that, even though he be not said “to eat of that which is sacrificed to idols” [2] nominally (not being dedicated to any particular idol) , he is shunned as an idolater. What less of defilement does he recur on that ground, [3] than a business brings which, both nominally and virtually, is consecrated publicly to an idol? The Minervalia are as much Minerva’s, as the Saturnalia Saturn’s; Saturn’s, which must necessarily be celebrated even by little slaves at the time of the Saturnalia. ”