 What this means in practice is taking the strictest view possible of what constitutes the dialectical grounds for the acceptance of an assertion; put another way, a level of rigor is aspired to in philosophical arguments approaching that which is found in mathematical proofs. A formulation of the view—one which is somewhat phenomenologically colored (see below)—can be found in a document in the Gödel Nachlass. This is a fourteen item list Gödel drew up in about 1960, entitled “My Philosophical Viewpoint.” Two items on the list are relevant here: