Evil gives you far more strings to pull. But I must say that I have never been interested in the psychology of evil, not in the slightest. Perhaps I'm not interested in evil, but in the dark sides of human beings.
[In] the realm of science,. . . what we have achieved will be obsolete in ten, twenty or fifty years. That is the fate, indeed, that is the very meaning of scientific work. . . . Every scientific "fulfillment" raises new "questions" and cries out to be surpassed rendered obsolete. Everyone who wishes to serve science has to resign himself to this.