This conception of philosophy furnishes the SW School with an antidote to psychologism, which differs fundamentally from the kind of anti-psychologism proferred by the Marburg school (see section 2.1). For Windelband, axioms are understood “teleologically”: they are the rules that must be followed if certain ends are to be realized. For instance, logic gives those norms that must be followed if one wants to believe what is true. Axioms are norms, and their necessity is normative necessity. Ess