You make experiments and I make theories. Do you know the difference? A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.

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Attribution note

No reliable primary or scholarly source confirms this exact wording as Albert Einstein's. It is widely circulated under his name and is listed as commonly attributed.

About this quote

This wording, beginning "You make experiments and I make theories. Do you know…," circulates under Einstein's name and focuses on experiments, theories, difference. No strong source for the exact text was found, so the page presents it as commonly attributed while still explaining its practical connection to science and life.

When to use it

  • Use "You make experiments and I make theories. Do you know…" in a science discussion, then ask which concrete claim the wording makes.
  • Compare its treatment of experiments with theories in a lesson, essay, or editorial note before drawing a conclusion.
  • Before sharing it as Einstein's exact words, display the attribution caveat and follow the evidence link recorded on the page.