Kant and the Normativity of Logic[Note 1. This paper was inspired by discussions in the graduate ...]

To say that logic is normative is to say that humans ought to reason soundly or validly (more generally, cogently).... Logic [according to Kant and later Boole and Frege] tells us how we ought to reason or think in every possible set of circumstances because this is required by the nature of rationality. So logic is intrinsically categorically normative ... logic is a moral science. (Hanna 2006: 85–87)