Carl Sagan quote: If we do not speak for Earth, who will? If...

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

Carl Sagan

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Carl Sagan (2011). “Cosmos”, p.349, Ballantine Books

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

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