A. MS., G-c.1911-1, pp. 1-47, with 16 pp. of variants.
Published, in part, as 6.177-184 (pp. 21-44). Omitted: an explanation of logical critic and a definition of “reasoning.” The parallel between the exercise of logical self-criticism and the exercise of moral self-criticism. Logical instinct. The triad of normative sciences. The dependence of logic upon ethics, and both upon esthetics. How habits are created. Comte’s classification of the sciences. CSP’s threefold division of the sciences: heuretic, tagmatic, and practical.