That Lucretius and many others did more than simply associate themselves with Epicurus—that they celebrated him as godlike in his wisdom and courage—depended not on his social credentials but upon what they took to be the saving power of his vision. The core of this vision may be traced back to a single incandescent idea: that everything that has ever existed and everything that will ever exist is put together out of indestructible building blocks, irreducibly small in size, unimaginably vast in number. The Greeks had a word for these invisible building blocks, things that, as they conceived
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