Carl Sagan Quote

If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?


Cosmos (ed. Ballantine Books, 2011) - ISBN: 9780307800985


If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?

If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?

If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?

If we do not speak for Earth, who will? If we are not committed to our own survival, who will be?