Prologue — Dedication

To the beloved Provost of Louvain himself, I, Brother Thomas Aquinas, wish you health and increase in true wisdom.

My attention has been drawn to your diligence, whereby in your youthful state you pursue not vanity but the study of wisdom. Desiring to satisfy your desire, I have taken the trouble, in the midst of many demanding tasks, to undertake an exposition on the book of Aristotle called Peri hermeneias, which contains many obscure passages. I aimed, as far as possible, to explain higher things to advanced students, without depriving the younger ones of the assistance they need to make progress. Therefore, may your studious self accept the small gift of the present exposition. If it helps you to make progress, you may stimulate me to do you greater favors.