Tritt listened placidly, clearly understanding nothing, but content to be listening; while Odeen, transmitting nothing, was as clearly content to be … - Isaac Asimov

Por ello, es paradójico que las amargas denuncias romanas de los robos de los vándalos hayan hecho hoy el término "vándalo" un sinónimo de alguien que destruye todo por el placer de destruirlo; precisamente esto fue lo que los vándalos no hicieron en esta ocasión.

It is a mistake, he said, to suppose that the public wants the environment protected or their lives saved and that they will be grateful to any idealist who will fight for such ends. What the public wants is their own individual comfort. We know that well enough from our experience in the environmental crisis of the twentieth century. Once it was well known that cigarettes increased the incidence of lung cancer, the obvious remedy was to stop smoking, but the desired remedy was a cigarette that did not cause cancer. When it became clear that the internal-combustion engine was polluting the atmosphere dangerously, the obvious remedy was to abandon such engines, and the desired remedy was to develop non-polluting engines.

If a modified robot were to drop a heavy weight upon a
human being, he would not be breaking the First Law, if he did so with the knowledge
that his strength and reaction speed would be sufficient to snatch the weight away before
it struck the man. However once the weight left his fingers, he would be no longer the
active medium. Only the blind force of gravity would be that. The robot could then
change his mind and merely by inaction, allow the weight to strike. The modified First
Law allows that" (79).