This lecture discusses key ideas from the 20th Century philosopher and political activist John Hospers' essay "What Libertarianism Is" It focuses specifically on his discussion of the three rights he takes as fundamental, i.e. the right to maintain one's life, the right to maintain one's liberty or freedom, and the right to one's own property. These supersede and structure all other moral considerations for the libertarian. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 2000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler You can get a copy of the text here - http://public.callutheran.edu/....~chenxi/phil315_101.