id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-5408 Philosophy - Wikipedia .html text/html 11842 1896 56 Today, major subfields of academic philosophy include metaphysics, which is concerned with the fundamental nature of existence and reality; epistemology, which studies the nature of knowledge and belief; ethics, which is concerned with moral value; and logic, which studies the rules of inference that allow one to deduce conclusions from true premises.[14][15] Other notable subfields include philosophy of science, political philosophy, aesthetics, philosophy of language, and philosophy of mind. Some of those who study philosophy become professional philosophers, typically by working as professors who teach, research and write in academic institutions.[85] However, most students of academic philosophy later contribute to law, journalism, religion, sciences, politics, business, or various arts.[86][87] For example, public figures who have degrees in philosophy include comedians Steve Martin and Ricky Gervais, filmmaker Terrence Malick, Pope John Paul II, Wikipedia co-founder Larry Sanger, technology entrepreneur Peter Thiel, Supreme Court Justice Stephen Bryer and vice presidential candidate Carly Fiorina.[88][89] Curtis White has argued that philosophical tools are essential to humanities, sciences and social sciences.[90] ./cache/en-wikipedia-org-5408.html ./txt/en-wikipedia-org-5408.txt