"Earth is home. Evolution connects us all. Death comes to all. On this blue planet we the human species are united by our common habitation, our common origin and our common mortality. The actual is greater than the superficial and the certainty of death can be a driving force for solidarity and not a suppressed anxiety that drives us towards division and despair. The uncertainty of life and the certainty of death unite all of us who come to this existence on this blue planet."
- Carl Sagan