@article{oai:kumadai.repo.nii.ac.jp:00021785, author = {Okabe, Tsutomu and 岡部, 勉}, journal = {文学部論叢}, month = {Mar}, note = {application/pdf, 論文(Article), What is the basis of communicative abilities of human beings as rational beings? To answer this, we must start from an amazing story of transubstantiation of a biological substantial type, homo sapiens, into a new non-biological substantial type, person or, Paul Grice said in a passage, metaphysician. I suppose this kind of thing would have happened to all of us when we should have become rational. I'm not sure when it happened to me, though I think it certainly happened to me as it had happened to the initial human beings many thousands years before. Why do we need such a transubstantiation? Grice's answer is very simple: rationality demands it We are born initially as human beings who are accidentally rational beings; then we are to become, through radical alteration of rationality, essentially rational beings.}, pages = {103--126}, title = {人間のコミュニケーション能力の基礎について : 理性的存在である人間のコミュニケーション能力の基礎に関する形而上学的考察}, volume = {80}, year = {2004} }