Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
Carl SaganBooks are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.
Carl SaganAn atheist has to know a lot more than I know. An atheist is someone who knows there is no god. By some definitions atheism is very stupid.
Carl SaganIt would be wryly interesting if in human history the cultivation of marijuana led generally to the invention of agriculture, and thereby to civilization.
Carl Sagan