Atomism existed for millenia before we investigated this possibilty to such a degree that we were able leverage that concept to change the world. Its goes back to the 8th century BCE in India and the 5th century BCE in Greece. In both cases, people engaged in it imaginatively and thinking was applied. But its reach was small and only effected a small group who weren’t able to make a large societal impact.

Even in the 17th century, when there was a revival of interest in epicurean atomism, it was actively competing with corpulism. Hell, Mendelev, creator of the periodic table, didn’t believe in atoms. That’s sort of crazy to me!

Dalton, whose atomic weight was leveraged by Mendeleev and the rest rejected, posited what later became the basis of modern atomic theory. Einstein further developed this with Brownian motion describing how atoms effected the seemingly random movements of pollen. Perrin later verifies this experimentally in 1908.

So more than just the idea, it’s the culture of inquiry, debate, skepticism, investigation, and, eventually, experimentation that is important. Not just the idea. I guess, if I were to preserve anything, it would be that culture. No sentence can do that. But people’s radiance can.

* Disclaimer: this is a quick gloss of a long timeframe. A lot of details were omitted.