Among the many references, I suggest the following: SDE 137 - 82 (see, e.g., 141); Man's Vision of God (Chicago: Willett, Clark & Company, 1941), p. 225, pp. 244 - 47, and p. 315; «Chance, Love, and Incompatibility,» in RSP 85 - 109 (see especially 94 and 98f;
also see [in a later chapter] 118); TDG 193 «Abstraction: The Question of
Nominalism,» chapter IV of CSPM 57 - 68 (see especially 61 - 64;
also see [in an earlier chapter] 22f and [in a later] 122).
It's
also different from what might be called Darwinian
nominalism; words are weapons for the flourishing of the species because people, whether they know it or not, are basically species fodder.