I have very little leisure at the moment to argue my views on the subject which your letters raise, being taken up with more weighty and much more difficult matters. I do not mind saying that I am very much occupied with my studies in astronomy. But since I have always followed and wholly approved the authority and doctrine of Epicurus, the very wisest of men, and now see his standing bitterly attacked, harassed, and distorted by you, I have taken it upon myself to defend him. It is only right that tried and true pupils (as I have proved myself in all fields of learning) should defend their master’s teaching when it is attacked. Otherwise, when teachers are criticized, the pupil’s studies may themselves seem to be under attack. The great pains you have taken to gather material against Epicurus seem directed not so much at refuting him, but me, his follower and disciple. But I shall pay you back as you deserve.

For the remainder of the text of this presentation, see:  

https://www.epicureanfriends.com/thread/3296-cosma-raimondi-s-letter-to-ambrogio-tignosi/?postID=25725#post25725