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Carl Sagan
“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”
― Carl Sagan, Cosmos

135100 Language Learning 101 — 203 members — last activity Oct 02, 2018 08:55AM
Note: THIS GROUP IS A WORK IN PROGRESS. IF THERE ARE CERTAIN LANGUAGES/WORDS/PHRASES/SUBJECTS YOU'D LIKE TO LEARN, MESSAGE ME AND I WILL GET THIS UP F ...more
817 Physics — 240 members — last activity Feb 13, 2019 10:41AM
The Pleasure of Finding Things Out. Physique Physik Fysica Fizyka Физика Fisica فیزیک Φυσική
8095 Goodreads Developers — 3071 members — last activity Oct 27, 2026 12:25PM
Official group for developers on Goodreads to coordinate and build cool apps. For general Goodreads support, please visit our help page.
1174850 BestThrillers.com Book Awards — 376 members — last activity Aug 31, 2026 04:57PM
This group celebrates the books recognized each year in the annual BestThrillers.com Book Awards. The award series recognizes stellar books across 15 ...more
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Introduction to Electrodynamics by David J. GriffithsThe Feynman Lectures on Physics by Richard P. FeynmanIntroduction to Quantum Mechanics by David J. GriffithsRelativity by Albert EinsteinSpacetime and Geometry by Sean Carroll
Not Pop-Science - Physics
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