Ad Lucilium Epistulae Morales Letter 76. 9 - 10 Quid in homine proprium? Ratiō. Quid: what in: in homine: man proprium: characteristic Ratiō: reason What is characteristic of man? Reason. Support the show, buy the book, enjoy the read: Nostoi, the homecomings Homer left untold, reconstructed for the first time in over a 1000 years. Rss Apple Podcaster →