Doubtless all this is difficult of apprehension, mainly on account of the fact that there is no proof for it in a manner that can be made intelligible. But the question arises, What is the power that acts and brings forth proofs concerning anything? It is evidently not the whole of the potentialities of man’s nature: it is no more than the understanding dealing with the evidence of impressions. But the understanding, when dealing with the content of the union of individual potency and over-individual norms, is dealing with a content infinitely larger and more complex than itself; the material is too great and intricate for the understanding to handle; it is a fruitless attempt of the Part to monopolise the meaning and value of the Whole. The proof rather lies within the domain of the soul itself, and is not something which may be tacked on to any kind of external, spatial existence; it is the emergence of a new kind of existence or self-subsistence. The proof (if we designate it by such an insufficient term) is within the experience and not without; it is the spiritual experience itself and not merely an account, [p.100] in the form of even valid logical concepts, concerning such experience.[30]
The space devoted to this subject may be justified on account of the fact that Eucken’s meaning of the evolution of spiritual life towards higher levels cannot be understood without an understanding of the distinction between knowledge about experience and the content of experience itself, as this latter reveals itself in the ways mentioned.[31] Eucken has lately paid great attention to this matter in the new edition (1912) of Hauptprobleme der Religionsphilosophie der Gegenwart, especially in the chapter on the “Philosophy of Religion and the Psychology of Religion."[32]


