I. Guiding Thoughts on the Method of Presentation

Philosophers have often pointed out that they are at a loss when asked about the nature of philosophy in the true sense of the word. One thing, however, is certain, namely, that one must see in philosophy a special form of satisfying the need of the human soul expressed in the challenge, “Know Thyself.” Of this challenge one can know just as distinctly as one can know what hunger is, although one may be at a loss to give an explanation of the phenomenon of hunger that would be satisfactory to everybody.