The day you stop learning is the day you begin decaying.

Scientists derive satisfaction from figuring out the puzzle. It's about the quest, not the grail.

Isn't it sad that you can tell people that the ozone layer is being depleted, the forests are being cut down, the deserts are advancing steadily, that the greenhouse effect will raise the sea level 200 feet, that overpopulation is choking us, that pollution is killing us, that nuclear war may destroy us - and they yawn and settle back for a comfortable nap. But tell them that the Martians are landing, and they scream and run.

No one suggests that writing about science will turn the entire world into a model of judgment and creative thought. It will be enough if they spread the knowledge as widely as possible.

The true delight is in the finding out rather than in the knowing.

Fertility is hereditary. If your parents didn't have any children, neither will you. I do not fear computers. I fear the lack of them.

Considering what human beings do and have done to human beings (and to other living things as well) ... I can never imagine what the devil people think computers can add to the horrors.