Before the first meeting, Schlick admonished us urgently not to start a discussion of the kind to which we were accustomed in the Circle, because Wittgenstein did not want such a thing under any circumstances. We should even be cautious in asking questions, because Wittgenstein was very sensitive and easily disturbed by a direct question. The best approach, Schlick said, would be to let Wittgenstein talk and then ask only very cautiously for the necessary elucidations.
When I met Wittgenstein, I saw that Schlick’s warnings were fully justified. But his behavior was not caused by any arrogance. In general, he was of a sympathetic temperament and very kind; but he was hypersensitive and easily irritated. Whatever he said was always interesting and stimulating, and the way in which he expressed it was often fascinating. His point of view and his attitude toward people and problems, even theoretical problems, were much more similar to those of a creative artist than to a scientist; one might almost say, similar to those of a religious prophet or seer. When he started to formulate his view on some specific problem, we often felt the internal struggle that occurred in him at that very moment, a struggle by which he tried to penetrate from darkness to light under an intensive and painful strain, which was even visible on his most expressive face. When finally, sometimes after a prolonged arduous effort, his answer came forth, his statement stood before us like a newly created piece of art or a divine revelation. . . . The impression he made on us was as if insight came to him as through a divine inspiration, so that we could not help feeling that any sober ratio- nal comment or analysis of it would be a profanation.
Thus, there was a striking difference between Wittgenstein’s attitude toward philosophical problems and that of Schlick and myself. Our attitude toward philosophical problems was not very different from that which scientists have toward their problems. For us the discussion of doubts and objections of others seemed the best way of testing a new idea in the field of philosophy just as much as in the fields of science; Wittgenstein, on the other hand, tolerated no critical examination by others, once the insight had been gained by an act of inspiration. . . . Earlier when we were reading Wittgenstein’s book in the Circle, I had erroneously believed that his attitude toward metaphysics was similar to ours. I had not paid sufficient attention to the statements in his book about the mystical, because his feelings and thoughts in this area were too divergent from mine. . . . Even at the times when the contrast in Weltanschauung and basic personal attitude became apparent, I found the association with him most interesting, exciting, and rewarding. Therefore, I regretted it when he broke off the contact. From the beginning of 1929 on, Wittgenstein wished to meet only with Schlick and Waismann, no longer with me and Feigl, who had also become acquainted with him in the meantime, let alone with the Circle. Although the difference in our attitudes and personalities expressed itself only on certain occasions, I understood very well that Wittgenstein felt it all the time and, unlike me, was disturbed by it. He said to Schlick that he could talk only with somebody who “holds his hand.”
Rudolf Carnap, Autiobiography
And while Wittgenstein is for me unquestionably the greater thinker, Carnap still easily wins the day as one of the most resolutely sensible philosophers of the time:
The transformation and final abandonment of my religious convictions led at no time to a nihilistic attitude toward moral questions. My moral valuations were afterwards essentially the same as before. It is not easy to characterize these valuations in a few words, since they are not based on explicitly formulated principles, but constitute rather an implicit lasting attitude. The following should therefore be understood as merely a rough and brief indication of certain basic features. The main task of an individual seems to me the development of his personality and the creation of fruitful and healthy relations among human beings. This aim implies the task of co-operation in the development of society and ultimately of the whole of mankind towards a community in which every individual has the possibility of leading a satisfying life and of participating in cultural goods. The fact that everybody knows that he will eventually die need not make his life meaningless or aimless. He himself gives meaning to his life if he sets tasks for himself, struggles to fulfill them to the best of his ability, and regards all the specific tasks of all individuals as parts of the great task of humanity, whose aim goes far beyond the limited span of each individual life.