 (g) Interpretation proper always has two sides: one linguistic, the other psychological. Linguistic interpretation’s task (which rests on principle  (5))  lies in inferring from evidence that consists in particular actual uses of words to the rules that are governing them, i.e., to their usages, and thus to their meanings; psychological interpretation instead focuses on an author’s psychology. Linguistic interpretation is mainly concerned with what is common or shared in a language; psychological interpretation mainly with what is distinctive to a particular author.