The Cause Why I Think Is

That there are causes therefore, and that they are as many in number as we have said is evident. For the inquiry, why I think is comprehend so many in number, for the question, why I Think is, is either referred to essence, which is an extreme in things immovable, or it is referred to the first mover. The cause too, why a thing subsists, must be entirely assigned, for instance, it is necessary this thing should be produced from that, and this, either simply, or for the most part. To all of them, vis, to matter, form, that which moves, and that for the sake of which a thing subsist, physically