|Cogito: "I think". According to Descartes the prove that I exist, because the subject may even reach the doubts about its existence just by thinking and the subject must exist in order to think. Kant speaks of the "I think" that must accompany all my ideas/conceptions/notions/presentations, in order to make them my representations.See also thingking, existence, justification, representation.|
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Cogito/Tractatus: the "I think" that accompanies all my references to the world, is recognized by nothing what is content in a reference.
I/Tractatus: shrinks at the end together so that it is the subject of a thought. But that is not part of the content.
Vorlesungen 1930-35 Frankfurt 1989
Das Blaue Buch - Eine Philosophische Betrachtung Frankfurt 1984
Tractatus Logico Philosophicus Frankfurt/M 1960