Yes, yes, I see it all! — an enormous social activity, a mighty civilization, a profuseness of science, of art, of industry, of morality, and afterwords, when we have filled the world with industrial marvels, with great factories, with roads, museums and libraries, we shall fall exhausted at the foot of it all, and it will subsist — for whom? Was man made for science or was science made for man?

Philosophy fulfills the need to create for ourselves a single and complete concept of the world and of life.

True science teaches, above all, to doubt and be ignorant.

These terrible sociologists, who are the astrologers and alchemists of our twentieth century.