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Collecting Quote by Ernest Rutherford

“That which is not measurable is not science. That which is not physics is stamp collecting.” quote by Ernest Rutherford
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“That which is not measurable is not science. That which is not physics is stamp collecting.”

Ernest Rutherford

About This Quote

Source Lecture: Physics Foundations, Cambridge, 1920

Only measurable phenomena qualify as science; non‑physical studies are mere collection.

In simple terms: Science requires measurable evidence.

Key Takeaway

Prioritize empirical evidence in inquiry.

Themes

science measurement methodology

Mood

analytical critical

Type

philosophical academic

When to use this quote

  • laboratory research
  • data analysis
  • policy making

Key Concepts

empiricism philosophy of science

Questions to Reflect On

  • How can we value qualitative insights?
  • When is speculation useful?
A Different Perspective

Not all valuable knowledge is measurable.

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