Any theory intended to describe and analyze socio-historical reality cannot restrict itself to the human spirit and disregard the totality of human nature.

Any theory intended to describe and analyze socio-historical reality cannot restrict itself to the human spirit and disregard the totality of human nature.

All science is experiential; but all experience must be related back to and derives its its validity from the conditions and context of consciousness in which it arises, i.e., the totality of our nature.

The individual always realizes only one of the possibilities in his development, which could always have taken a different turning whenever he had to make an important decision.

In the real life-process, willing, feeling, and thinking are only different aspects.

The existence of inherent limits of experience in no way settles the question about the subordination of facts of the human world to our knowledge of matter.

If we conceive all the changes in the physical world as reducible to the motion of atoms, motions generated by means of the fixed nuclear forces of those atoms, the whole of the world could thus be known by means of the natural sciences.