“At the present rate of progress, it is almost impossible to imagine any technical feat that cannot be achieved - if it can be achieved at all - within the next few hundred years.”

“Perhaps it is better to be un-sane and happy, than sane and un-happy. But it is the best of all to be sane and happy. Whether our descendants can achieve that goal will be the greatest challenge of the future. Indeed, it may well decide whether we have any future.”

“As Solomon himself had remarked, 'We can be sure of talent, we can only pray for genius.' But it was a reasonable hope that in such concentrated society some interesting reactions would take place. Few artists thrive in solitude and nothing is more stimulating than the conflict of minds with similar interests. So far, the conflict had produced worthwhile results in sculpture, music, literary criticism and film making. It was still too early to see if the group working on historical research would fulfil the hopes of its instigators, who were frankly hoping to restore mankind's pride in its own achievements. Painting still languished which supported the views of those who considered that static, two dimensional forms of art had no further possibilities. It was noticeable, though a satisfactory explanation for this had not yet been produced that time played an essential part in the colony's achievements.”

“1. When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.2. The only way of discovering the limits of the possible is to venture a little way past them into the impossible.3. Any sufficiently advanced technology is indistinguishable from magic.”

“Finally, I would like to assure my many Buddhist, Christian, Hindu, Jewish, and Muslim friends that I am sincerely happy that the religion which Chance has given you has contributed to your peace of mind (and often, as Western medical science now reluctantly admits, to your physical well-being). Perhaps it is better to be un-sane and happy, than sane and un-happy. But it is the best of all to be sane and happy. Whether our descendants can achieve that goal will be the greatest challenge of the future. Indeed, it may well decide whether we have any future.”

“In my life I have found two things of priceless worth - learning and loving. Nothing else - not fame, not power, not achievement for its own sake - can possible have the same lasting value. For when your life is over, if you can say 'I have learned' and 'I have loved,' you will also be able to say 'I have been happy.”

“Almost any seat was comfortable at one-sixth of a gravity.”