Additionally, Sartre's philosophy of existentialism is opposed to a certain kind of rationalistic humanism. Upon the confession of the Self-Taught Man as to being a member of the S.F.I.O., a French Socialist party, Roquentin quickly engages him in a Socratic dialogue to expose his inconsistencies as a humanist. Roquentin first points out how his version of humanism remains unaffiliated to a particular party or group so as to include or value all of mankind. However, he then notes how the humanist nonetheless caters his sympathy with a bias towards the humble portion of mankind. Roquentin continues to point out further discrepancies of how one humanist may favor an audience of laughter while another may enjoy the somber funeral. In dialogue, Roquentin challenges the Self-Taught Man to show a demonstrable love for a particular, tangible person rather than a love for the abstract entity attached to that person (e.g. the idea of Youth in a young man). In short, he concludes that such humanism naively attempts to "melt all human attitudes into one." More importantly, to disavow humanism does not constitute "anti-humanism".