Both Ludwig Wittgenstein and Ernst Cassirer dealt with how language affects meaning in specific ways. Wittgenstein developed the idea that language is a matter of following various rules to achieve specific ends, while Cassirer developed the idea that language allows a process of symbolic forms that are independent of reality. Language moves from the direct relationship with reality as expressed by nouns into logical relationships expressed by verbs, and eventually the designations of "here and there" as well as "this and that" allow for the more abstract designation of subject and object.