The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the earth.

The numbers of distinct human societies or nations, when our race is twice its present age, may be far greater than the total number of all the men who have ever lived up to the present time.

The moon is the first milestone on the road to the stars.

When beauty is universal, it loses its power to move the heart, and only its absence can produce any emotional effect.

Open the pod bay doors, Hal.

What was more, they had taken the first step toward genuine friendship. They had exchanged vulnerabilities.

If we have learned one thing from the history of invention and discovery, it is that, in the long run-and often in the short one-the most daring prophecies seem laughably conservative.