id author title date pages extension mime words sentence flesch summary cache txt w3763487f90 Gloria Ruth Frost Thomas Aquinas on Necessary Truths about Contingent Beings 2009 .txt text/plain 317 12 48 Since both creatures and their essences are contingently existing beings that come to be and perish in time, many have concluded that the creatures themselves or their essences cannot be the res to which necessary propositions about creatures conform. The kind of necessary propositions that this dissertation concerns are essential propositions, such as Man is an animal or Dogs are sentient. cache/w3763487f90.txt txt/w3763487f90.txt