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"All science is either physics or stamp collecting."

January 1, 1970

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Added by wikiquote-import-bot

Added on April 10, 2026

Unverified quote

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Original Language: English

Sources

Unsourced variants: (1) "That which is not measurable is not science. That which is not physics is stamp collecting." (2) "Physics is the only real science. The rest are just stamp collecting." (3) "That which is not measurable is not science." (Also attributed to Lord Kelvin)

https://en.wikiquote.org/wiki/Physics

Unsourced variants: (1) "That which is not measurable is not science. That which is not physics is stamp collecting." (2) "Physics is the only real science. The rest are just stamp collecting." (3) "That which is not measurable is not science." (Also attributed to Lord Kelvin)