“On Earth, we are unmanned by our longing for a pastoral past that never really existed; and that, if it had existed, could never exist again...on the Moon, there is no past to long for or dream about. There is no direction but forward.”

“The easiest way to solve a problem is to deny it exists.”

“I am frequently asked if I have visited Israel, whereas yet, it is simply assumed that I have. Well, I don’t travel. I really don’t, and if I did, I probably wouldn’t visit Israel. I remember how it was in 1948 when Israel was being established and all my Jewish friends were ecstatic, I was not. I said: what are we doing? We are establishing ourselves in a ghetto, in a small corner of a vast Muslim sea. The Muslims will never forget nor forgive, and Israel, as long as it exists, will be embattled. I was laughed at, but I was right. I can’t help but feel that the Jews didn’t really have the right to appropriate a territory only because 2000 years ago, people they consider their ancestors, were living there. History moves on and you can’t really turn it back. (#92 ff.)”

“The Three Laws of Robotics:1: A robot may not injure a human being or, through inaction, allow a human being to come to harm;2: A robot must obey the orders given it by human beings except where such orders would conflict with the First Law;3: A robot must protect its own existence as long as such protection does not conflict with the First or Second Law;The Zeroth Law: A robot may not harm humanity, or, by inaction, allow humanity to come to harm.”

“I am an atheist, out and out. It took me a long time to say it. I've been an atheist for years and years, but somehow I felt it was intellectually unrespectable to say one was an atheist, because it assumed knowledge that one didn't have. Somehow, it was better to say one was a humanist or an agnostic. I finally decided that I'm a creature of emotion as well as of reason. Emotionally, I am an atheist. I don't have the evidence to prove that God doesn't exist, but I so strongly suspect he doesn't that I don't want to waste my time.”

“In all the known history of Mankind, advances have been made primarily in physical technology; in the capacity of handling the inanimate world about Man. Control of self and society has been left to to chance or to the vague gropings of intuitive ethical systems based on inspiration and emotion. As a result no culture of greater stability than about fifty-five percent has ever existed, and these only as the result of great human misery.”

“The Three Theorems of Psychohistorical Quantitivity:The population under scrutiny is oblivious to the existence of the science of Psychohistory.The time periods dealt with are in the region of 3 generations.The population must be in the billions (±75 billions) for a statistical probability to have a psychohistorical validity.”