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

On the other hand, for the whole human being who wills, feels, and represents, external reality is given simultaneously and with as much certitude as his own self.

If there were a science of human beings it would be anthropology that aims at understanding the totality of experience through structural context.

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

A knowledge of the forces that rule society, of the causes that have produced its upheavals, and of society's resources for promoting healthy progress has become of vital concern to our civilization.

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.

Ancient metaphysics underwent many changes at the hands of medieval thinkers who brought it in line with the dominant religious and theological movements of their day.