No sociologist should think himself too good, even in his old age, to make tens of thousands of quite trivial computations in his head and perhaps for months at a time.
Only by strict specialization can the scientific worker become fully conscious, for once and perhaps never again in his lifetime, that he has achieved something that will endure. A really definitive and good accomplishment is today always a specialized act.
Only he has the calling for politics who is sure that he will not crumble when the world from his point of view is too stupid or base for what he wants to offer. Only he who in the face of all this can say In spite of all! has the calling for politics.