One theory which can no longer be taken very seriously is that UFOs are interstellar spaceships.

Now I understand,” said the last man.

. . . Moon-Watcher felt the first faint twinges of a new and potent emotion. It was a vague and diffuse sense of envy--of dissatisfaction with his life. He had no idea of its cause, still less of its cure; but discontent had come into his soul, and he had taken one small step toward humanity.

Anything that is theoretically possible will be achieved in practice, no matter what the technical difficulties are, if it is desired greatly enough.

Before you become too entranced with gorgeous gadgets and mesmerizing video displays, let me remind you that information is not knowledge, knowledge is not wisdom, and wisdom is not foresight. Each grows out of the other, and we need them all.

My objection to organized religion is the premature conclusion to ultimate truth that it represents.

Once you can reproduce a phenomenon, you are well on the way to understanding it.