"Logical investigations can obviously be a useful tool for philosophy. They must, however, be informed by a sensitivity to the philosophical significance of the formalism and by a generous admixture of common sense, as well as a thorough understanding both of the basic concepts and of the technical details of the formal material used. It should not be supposed that the formalism can grind out philosophical results in a manner beyond the capacity of ordinary philosophical reasoning. There is no mathematical substitute for philosophy."

Previous Quote

Freud, Jung thought, had been a great discoverer of facts about the mind, but far too inclined to leave the solid ground of "critical reason and common sense." Freud for his part criticized Jung for being gullible about occult phenomena and infatuated with Oriental religions; he viewed with sardonic and unmitigated skepticism Jung's defense of religious feelings as an integral element in mental health. For Freud, religion was a psychological need projected onto culture, the child's feeling of helplessness surviving in adults, to be analyzed rather than admired.

— Peter Gay