It is vital to remember that information - in the sense of raw data - is not knowledge, that knowledge is not wisdom, and that wisdom is not foresight. But information is the first essential step to all of these.

Space is what stops everything from happening in the same place.

I am an optimist. Anyone interested in the future has to be otherwise he would simply shoot himself.

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

The Earth would only have to move a few million kilometers sunward-or starward-for the delicate balance of climate to be destroyed. The Antarctic icecap would melt and flood all low-lying land; or the oceans would freeze and the whole world would be locked in eternal winter. Just a nudge in either direction would be enough.

Overhead, without any fuss, the stars were going out.

The person one loves never really exists, but is a projection focused through the lens of the mind onto whatever screen it fits with least distortion.