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.

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 knife of historical relativism... which has cut to pieces all metaphysics and religion must also bring about healing.

The sciences which take socio-historical reality as their subject matter are seeking, more intensively than ever before, their systematic relations to one another and to their foundation.

From the perspective of mere representation, the external world always remains only a phenomenon.

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.