Michelangelo sent an answer which may be cited as an example of his peculiar irony.

Under the form of elaborate compliment it conceals the scorn he must have conceived for Aretino and his insolent advice.

Yet he knew how dangerous the man could be, and felt obliged to humour him.
"Magnificent Messer Pietro, my lord and brother,--The receipt of your letter gave me both joy and sorrow.

I rejoiced exceedingly, since it came from you, who are without peer in all the world for talent.

Yet at the same time I grieved, inasmuch as, having finished a large part of the fresco, I cannot realise your conception, which is so complete, that if the Day of Judgment had come, and you had been present and seen it with your eyes, your words could not have described it better.
Now, touching an answer to my letter, I reply that I not only desire it, but I entreat you to write one, seeing that kings and emperors esteem it the highest favour to be mentioned by your pen.