Human beings can tolerate an immortal robot, for it doesn't matter how long a machine lasts, but they cannot tolerate an immortal human being since t… - Isaac Asimov

That robot gives me the willies anyway — too damned inquisitive!

I despise envy on principle and I feel only contempt for those who fall prey to it; so I never let myself feel it, you see, unless I can call it something else.

The thought-pattern evoked has religious characteristics, and you know what that means." "Not a bit." Mis was not enthusiastic about the necessity of explanation. He never was. So he growled, stared at the long cigar he rolled thoughtfully between his fingers and said, "Characterized by strong faith reactions. Beliefs can't be shaken short of a major shock, in which case, a fairly complete mental disruption results. Mild cases-hysteria, morbid sense of insecurity. Advanced cases – madness and suicide."