The creation of wealth is certainly not to be despised, but in the long run the only human activities really worthwhile are the search for knowledge, and the creation of beauty. This is beyond argument, the only point of debate is which comes first.
Arthur C. ClarkeWhen you finally understand the universe, it will not only be stranger than you imagine, it will be stranger than you can imagine.
Arthur C. ClarkeBut please remember: this is only a work of fiction. The truth, as always, will be far stranger.
Arthur C. ClarkeThose wanderers must have looked on Earth, circling safely in the narrow zone between fire and ice, and must have guessed that it was the favourite of the Sun's children.
Arthur C. Clarke