# What happens on Earth may determine the long-term future of the entire cosmos by Martin Rees > "What happens on Earth may determine the long-term future of the entire cosmos." > **— Martin Rees**, *On the Future (2018) / public talks, wording candidate* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: On the Future (2018) / public talks, wording candidate.