  However, there are texts in Renaissance philosophy that are obviously more “Aristotelian” than others, namely, the commentaries on texts by Aristotle.  There are more of them than we have from any other period of the history of philosophy. And in many of the Renaissance universities philosophy training was keyed to the interpretation of texts by Aristotle and often involved the use of textbooks derived from works by Aristotle and his commentators. In addition to this, the corpus Aristotelicum was used as a matrix for textbooks and encyclopedias and as a starting point for treatises on more or less special philosophical  questions.[4] 