Discipline pertains to one’s commitment to reasonableness, where “reasonableness” consists of a set of principles that guide one’s life in accordance with reason. More generally, it admits that reasonableness is a function of the constitution of the case; a case that encompasses the subjective magnitude of the agent who assesses the factors involved, and the objective dimension of those factors in their interplay, with the understanding that each of those factors can have an indeterminate behaviour of its own. Discipline is not about becoming an elite performer relative to one’s peers, but only to commit to the reasonableness that is to govern one’s life, which necessarily means that the principles derived therefrom are aligned with one’s actuality, else they would not be reasonable.