y-tube/youtube youtube.philosophy. doll eye 2016. 9. 5. 19:27 https://www.youtube.com/watch?v=vV9LVsJYMoQ......절학초급https://www.youtube.com/watch?v=Hl91xkgv04g&list=PLJoxoinODAixJQqcNBnQB2pmQr6clTiA5.....사르트르