“The time will come…when quite different tendencies will come up … and people will say: It is pathological for people to even think in terms of spirit and soul. ‘Sound’ people will speak of nothing but the body. It will be considered a sign of illness for anyone to arrive at the idea of any such thing as a spirit or a soul. People who think like that will be considered to be sick and – you can be quite sure of it – a medicine will be found for this. . . . The soul will be made non-existent with the aid of a drug.