hay ciertas cosas que la Humanidad no está destinada a conocer - Isaac Asimov

Dors shook her head. "I can't bear to hear a human being spoken of with contempt just because of his group identification — even by other human beings. It's these respectable people here who create those hooligans out there." "And other respectable people," said Seldon, "who create these respectable people. These mutual animosities are as much a part of humanity —

Human beings sometimes find a kind of pleasure in nursing painful emotions, in blaming themselves without reason or even against reason.

Ideally, the Jump took zero-time — literally zero — and, if it were carried through with perfect smoothness, there would not, could not be any biological sensation at all. Physicists maintained, however, that perfect smoothness required infinite energy so that there was always an “effective time” that was not quite zero, though it could be made as short as desired. It was that which produced that odd and essentially harmless feeling of inversion.