# The Multiverse Is Speculative Science Not Metaphysics by Martin Rees > “[The possibility of a multiverse] is speculative science, but I would say that it is science and not metaphysics. I’m hopeful that as our understanding of the physics of the very early Big Bang firms up, we will gradually develop clearer ideas about whether our Big Bang was the only one and about the overall extent of physical reality.” > **— Martin Rees**, *Martin Rees: The RealClearReligion Interview, RealClearReligion, 2011* ## Sources and Context - **Direct publication and full context:** [Martin Rees: The RealClearReligion Interview](https://www.realclearreligion.org/articles/2011/04/06/martin_rees_the_realclearreligion_interview_106232.html) — The linked publication contains the quoted passage and its surrounding argument. Square brackets transparently restore referents established by the surrounding source. - **Master research record:** [[research/Martin Rees on Machine Succession, Post-Human Intelligence, and the Cosmic Future|Martin Rees on Machine Succession, Post-Human Intelligence, and the Cosmic Future]] — preserves this object inside the open Martin Rees source dossier. ## Related Articles and Collections - **Collection:** [[collections/Simple Reminders|Simple Reminders]] - **Collection:** [[collections/Machine Succession|Machine Succession]] - **Article:** [[articles/We Were Never Going to Make It|We Were Never Going to Make It]] - **Article:** [[articles/The Ramanujan Mathematical Universe|The Ramanujan Mathematical Universe]] - **Article:** [[articles/Project Hail Mary and Other Intelligences|Project Hail Mary and Other Intelligences]] - **Wiki map:** [[wiki/Cosmology|Cosmology]] ## Related Topics - [[wiki/Multiverse|Multiverse]] - [[wiki/Scientific Inference|Scientific Inference]] ## Share on Social Media ``` “[The possibility of a multiverse] is speculative science, but I would say that it is science and not metaphysics. I’m hopeful that as our understanding of the physics of the very early Big Bang firms up, we will gradually develop clearer ideas about whether our Big Bang was the only one and about the overall extent of physical reality.” — Martin Rees, Martin Rees: The RealClearReligion Interview, RealClearReligion, 2011 https://bryantmcgill.com/simple-reminders-martin-rees-multiverse-speculative-science-not-metaphysics ```