The Three Normative Sciences
Fourteenth Selection, pp. 196-207.

MS 312. [Published in CP 5.120-150 and in Turrisi's HL (1997): 205-220.]

Origin of the Text

Peirce delivered the fifth lecture on Thursday, April 30, 1903, two weeks after Lecture 4 (the university had been in recess the previous week). Peirce did not title the fifth lecture, but the Harvard Crimson announced that he would be discussing the normative sciences, "generally considered to be logic, ethics, and aesthetics," and that he then would proceed to a discussion of "truth" and "meaning." Two short drafts of the lecture can be found in MSS 310 and 311. The opening section of MS 312, which amounts to its first ten pages, was skipped by Peirce at delivery time; in it Peirce describes his fascinating and exacting research methodology. Since this is discussed again at the end of the lecture, albeit more briefly, the first section was not restored in the EP2 text, but was reproduced in an endnote.