6326. There was a philosopher who ranked among the more celebrated and sane, and who died some years ago, with whom I have spoken about the degrees of life in man, saying that man consists of mere forms for receiving life, and that one form is more interior than another, but that one has come into existence and subsists from another; also that when the lower or exterior form is dissolved, the higher or interior form still lives. It was further said that all operations of the mind are variations of the form, which variations in the purer substances are in such perfection that they cannot be described; and that the ideas of thought are nothing else; and that these variations take place according to the changes of the state of the affections. How very perfect are the variations in the purer forms may be concluded from the lungs, which fold themselves variously and vary their forms according to every expression of speech, and to every note of a tune, and to every motion of the body, and also to each state of thought and affection; and what then must be the case with interior things, which, in comparison with so large an organ, are in the greatest perfection. The philosopher confirmed what was said, and declared that such things had been known to him when he lived in the world, and that the world should apply philosophy to such uses, and should not be intent on mere forms of words and disputes about these, and thus labor in the dust.