To be "reasonable” means to put oneself into a special, rarely happy relation to the sensuous. "Be reasonable” means, practically speaking, do not trust your impulses, do not listen to your body, learn control, starting with your own sensuousness. But intellect and sensuousness are inseparable. Torless's outbreak of sweating after two pages of the Critique of Pure Reason contains as much truth as the whole of Kantianism. The understood mutual interaction of physis and logos is philosophy, not what is spoken.