The attempts that have been made, during the last three hundred years, to grasp the psyche are all part and parcel of that tremendous expansion of knowledge which has brought the universe nearer to us in a way that staggers the imagination.
The thousand fold magnifications made possible by the electron microscope vie with the five hundred million light-year distances
which the telescope travels.
Psychology is still a long way from a development similar to that which the other natural sciences have undergone; also, as we have seen, it has been much less able to shake off the trammels of philosophy.
All the same, every science is a function of the psyche, and all knowledge is rooted in it.
The psyche is the greatest of all cosmic wonders and the sine qua non of the world as an object.
It is in the highest degree odd that Western man, with but very few—and ever fewer exceptions, apparently pays so little regard to this fact.
Swamped by the knowledge of external objects, the subject of all knowledge has been temporarily eclipsed to the point of seeming nonexistence. ~Carl Jung, CW 8, Para 357