Essay is directed toward boys between the ages of twelve and eighteen who think. The mind-body distinction. The three classes of psychical, physical, and psychophysical. The three elements in all psychical phenomena. Analysis of the state of awareness in terms of its three ingredients. Consciousness of contrast and awareness of change. Triadic distinction of actual fast, may be, and would be. History of the principles of contradiction and excluded middle. Reality of can-be's and would-be's as well as actual facts and existing things. Would-be's related to dispositions and habits.
Awareness, and mind (soul), Canbe, Change, Contradiction principle of (see also Laws of thought), Contrast, Dispositions, Excluded middle principle of (see also Laws of thought), Fact, Habit (see also Belief Thirdness), Logic (modal see Modality), Matter and mind, Maybe, Mind and matter, Psychology, Psychophysics, Reasoning (probable see also Probability), Wouldbe
pp. 1-26, incomplete, with 18 pp. of variants. (Date according to Robin: "late")