Note 20 — Chapter I · SCHOOL AND MONASTERY 1467-1490
Reading edition
H. Kämmel, "Erasmus in Deventer," in Neue Jahrbücher für Philologie und Paedagogik, 1874, Bd. 110, p. 305, quotes from Wm. Bates, an English editor of Erasmus' Compendium Vitæ in 1687, the desperate conjecture that this phrase refers to some manual prepared by the father of Erasmus! I suspect—assuming that we have a correct text—that the reference is to some forgotten Latin phrase-book, beginning perhaps with the words "pater meus." "Tempora" can hardly refer to anything but the tenses of the grammar.