In my post on Parmeno's Pig, I forgot to mention that Plutarch's Convivial Questions also include chapters headed "Whether the hen or the egg came first" (2.3) and -- shades of Allan Bloom -- "That one should guard especially against the pleasures derived from degenerate music, and how to do so" (7.3). The work is a series of dialogues, so no clear answer is given to either question. Too bad there's no translation on-line -- not that the other chapters are as interesting as the three I have mentioned this weekend.