In previous articles I have been concerned with various aspects of science; and I have now to endeavour to look at scientific activity as a whole, and to view it in its relation to other activities of man. I have been trying to avoid those pleasant sweeping generalizations which strike the imagination and which are so easy to write and to read about: such as that science is our only avenue to truth; or that science is abstract and tells us nothing about the concrete nature of things; or that knowledge of particular facts is the object of science, generalizations being merely a means thereto; or that generalizations are the object of science, investigation of particular facts being merely a means thereto; all of which can be defended by a rich array of arguments, none of which can finally stand confrontation with the actual nature of scientific activity as a whole. The situation seems to be much more complicated than any such generalizations would suggest.

There can be little doubt, I think, that the quality and texture of recent scientific and philosophical thought mark a greater break with the past than any innovations such as were introduced by a Gallileo or a Newton, a Descartes or a Kant. The switch over from the logicality and essential rationality of these men to the irrationalisms, the anti-intellectualisms, and the new logics of the moderns, is not at all on the same footing as that deepening of our concepts of knowledge and reality which we associate with the masters of thought, more particularly with the critical philosophy of Kant. Strong and significant as these earlier changes were, they marked but the onward strides of an art of thinking which remained in its essence the same in spite of them. But the thinkers in the public eye to-day are exploring in unknown regions, and it may turn out that they have got beyond their depth. Whatever their fate, it seems undeniable that the experiments that they have made and are making constitute, at points at least, and for the time being, a veritable revolution.

(I) The poet’s words: “A man’s reach should exceed his grasp” are not merely a command of what ought to be, they are a description of what is. (a) Man has always been stretching himself beyond his own measure. He has a sense of the Infinite: Eternity has been set in his heart: he has not been content to look only on the things seen, his gaze has ever been towards the Unseen. Whatever stage of development he may have reached, he seeks for, and strives after, what is above and beyond himself and his world. In science he tries to get behind the phenomenal reality as his senses apprehend it, to the noumenal, mind. In philosophy he endeavours to bring the multiplicity of his experience, outer and inner, into a unity that will evidence itself to his reason as coherent, and not contradictory. In morality he is not content with the customs and standards of the society of which he is a member; but conscious of their inadequacy, he conceives and aspires to realize an ideal adequate to his nature; his ought to be is always challenging his is. The impulse or motive (the élan vital) of progress in all spheres of human interest and activity is “the best is yet to be.”

It is not only in science that abstraction is found as a method of dealing with the world, and we may profitably begin by showing its wide use in ordinary practical life.