This lecture discusses the ancient Greek philosopher Aristotle' work, On Interpretation, focusing on his discussion of modal propositions that include or reference necessity. He notes that there is an inverse relation between necessity and impossibility, that with necessity, contraries follow upon contradictories, and that possibility follows from necessity but not the converse.To support my ongoing work, go to my Patreon site - www.patreon.com/sadlerIf you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIOYou can find over 4,000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadlerPurchase Aristotle's On Interpretation - amzn.to/3nS55ud