The fundamental importance of the inner self frees us from the conception of evolution as a purely natural process. The Spirit is not something, which evolves before our eyes, flowing as if it were a river. This is a naturalistic conception of the Spirit, which ignores the inner self as that centre through which everything passes, in whose moral conscience all reality is idealised.
If reality evolved by itself there would be no place to speak of duty and conscience. But God does not consist in being, but in choosing. We cannot define God because we can experience him only in the present and in the act which comes from our inner self.