The Nuttall Encyclopedia
Quintilian, Marcus Fabius
Celebrated Latin rhetorician, born in Spain; went to Rome in the train of Galba, and began to practise at the bar, but achieved his fame more as teacher in rhetoric than a practitioner at the bar, a function he discharged with brilliant success for 20 years under the patronage and favour of the Emperor Vespasian in particular, being invested by him in consequence with the insignia and title of consul; with posterity his fame rests on his "Institutes," a great work, being a complete system of rhetoric in 12 books; he commenced it in the reign of Domitian after his retirement from his duties as a public instructor, and it occupied him two years; it is a wise book, ably written, and fraught with manifold instruction to all whose chosen profession it is to persuade men (35-92).
Wood, James, ed. Entry for 'Quintilian, Marcus Fabius'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/q/quintilian-marcus-fabius.html. Frederick Warne & Co Ltd. London. 1900.