It may be fairly presumed that Aristotle would not thus have varied his phrase without some real difference of meaning. That difference is founded, I think, on the two senses of [Greek: orexis] before alluded to (note, p. 53, l. 33). The first impulse of the mind towards Action may be given either by a vague desire or by the suggestion of Reason. The vague desire passing through the deliberate stage would issue in Moral Choice. Reason must enlist the Will before any Action can take place. Reason ought to be the originator in all cases, as Bishop Butler observes that Conscience should be. If this were so, every act of Moral Choice would be [Greek: orektikos nous]. But one obvious function of the feelings and passions in our composite nature is to instigate Action, when Reason and Conscience by themselves do not: so that as a matter of fact our Moral Choice is, in general, fairly described as [Greek: orexis dianoetike]. See Bishop Butler’s Sermon II. and the First upon Compassion.
The mind attains truth, either for the sake of truth itself ([Greek: aplos]), or for the sake of something further ([Greek: eneka tinos]). If the first then either syllogistically ([Greek: episteme]), non-syllogistically ([Greek: nous]), or by union of the two methods ([Greek: sophla]). If the second, either with a view to act ([Greek: phronesis]), or with a view to make ([Greek: techne]). Otherwise. The mind contemplates Matter Necessary or Contingent. If necessary, Principles ([Greek: nous]), Deductions ([Greek: episteme]), or Mixed ([Greek: sophla]). If Contingent, Action ([Greek: phronesis]), Production ([Greek: techen]). (Giphanius quoted in Cardwell’s notes.)