Rational psychology (n.) is really a mere anthropology of the inner sense — knowledge of the thinking self as alive, and nothing about its eternity.
Rational psychology (n.) in the form of pneumatism wins the debate about the soul unopposed, yet its whole plausibility dissolves into haze when put to the fiery test of critique.
Rational psychology (n.) collapses along with its chief supports: no path leads from the mere form of consciousness to a simple nature that can be met with nowhere in experience.
Rational psychology (n.) has a single text, "I think," from which it must spin its whole wisdom; the least empirical predicate — a single pleasure or displeasure — would turn it into empirical psychology.
Rational psychology (n.) exists not as a doctrine that adds to self-knowledge but as a discipline that fences reason in — from soulless materialism on one side and groundless spiritualism on the other.
Rational psychology (n.) owes its existence to a mere misunderstanding: the unity of consciousness that grounds the categories is mistaken for an intuition of the subject as an object.
Rational psychology (n.) is governed by a single representation, 'I am': individual in every respect, it proclaims itself a universal proposition valid for every thinking being, and so seems to reach farther than any experience could.