Philosophia patrum versibus praesertim leoninis, collected by Julius Wegeler (1869).
This is an astonishing collection of nearly 1500 Latin sayings with rhyme, often in rhymed verse form (single lines or sometimes couplets). In the full title of the book you find this delightful description: iuventuti studiosae hilariter tradita. I agree that it is something hilariter tradita indeed! To get a sense of what the sayings are like, here is a widget I made with sayings taken from this book (press refresh to see different sayings displayed):