He had steeled himself just a little for the Jump through hyper-space, a phenomenon one did not experience in simple interplanetary trips. The Jump r… - Isaac Asimov

There can never be a man so lost as one who is lost in the vast and intricate corrdiors of his own lonely mind, where none may reach and none may save. There never was a man so helpless as one who cannot remember.

Anything could be found in figures if the search were long enough and hard enough and if the proper pieces of information were ignored or overlooked.

The Solarians have given up something mankind has had for a million years; something worth more than atomic power, cities, agriculture, tools, fire, everything; because it's something that made everything else possible. (...) The tribe, sir. Co-operation between individuals. Solaria has given it up entirely. It is a world of isolated individuals and the planet's only sociologist is delighted that this is so. That sociologist, by the way, never heard of sociomathematics, because he is inventing his own science. There is no one to teach him, no one to help him, no one to think of something he himself might miss. The only science that really flourishes on Solaria is robotics and there are only a handful of men involved in that, and when it came to an analysis of the interaction of robots and men, they had to call in an Earthman to help.