In contrast to a concept of the understanding, which applies to the objects of experience and is involved in a possible empirical cognition, an 'idea' Idee in the Kantian sense, is a 'concept of reason,' which can never be adequately exemplified in experience and cannot be 'grasped' or 'comprehended' aufgefaβt at all in the manner of an objective concept Examples of such ideas include God, freedom, and immortality.