The earth is a very small stage in a vast cosmic arena.
Think of the rivers of blood spilled by all those generals and emperors,
so that they could be the momentary masters of a fraction of a dot.
Think of the endless cruelties visited by the inhabitants of one corner of the dot
on scarcely distinguishable inhabitants of some other corner of the dot.
How frequent their misunderstandings, how eager they are to kill one another,
how fervent their hatreds.
Our posturings, our imagined self-importance,
the delusion that we have some privileged position in the universe, are challenged
by this point
- Carl Sagan