When you finally understand the universe, it will not only be stranger than you imagine, it will be stranger than you can imagine.
Religion is the most malevolent of all mind viruses.
The moon is the first milestone on the road to the stars.
Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering.
Space is what stops everything from happening in the same place.
There were some things that only time could cure. Evil men could be destroyed, but nothing could be done with good men who were deluded.