Democritus, Fragments (c. 420 B.C.) from Sextus Empiricus (c. 200 AD) Adversus Mathematicos (Against the Mathematicians) VII, 135. As quoted in The Source Book in Ancient Philosophy (1909) Tr. Charles Montague Bakewell, p. 60.
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By convention (νόμῳ) sweet is sweet, by convention bitter is bitter, by convention hot is hot, by convention cold is cold, by convention color is color. But in reality there are atoms and the void. That is, the objects of sense are supposed to be real and it is customary to regard them as such, but in truth they are not. Only the atoms and the void are real.

— Democritus on History of chemistry

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "By convention (νόμῳ) sweet is sweet, by convention bitter is bitter, by convention hot is hot, by convention cold is cold, by convention color is color. But in reality there are atoms and the void. That is, the objects of sense are supposed to be real and it is customary to regard them as such, but in truth they are not. Only the atoms and the void are real." in the context of "Democritus, Fragments (c. 420 B.C.) from Sextus Empiricus (c. 200 AD) Adversus Mathematicos (Against the Mathematicians) VII, 135. As quoted in The Source Book in Ancient Philosophy (1909) Tr. Charles Montague Bakewell, p. 60." to mean that wisdom is timeless.

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Source: Wikiquote: "History of chemistry" (Quotes) The 'What it means' explanation text was generated by Google Gemini Flash (accessed January 18, 2026). https://gemini.google.com/app
Democritus

About Democritus

Democritus (c. 460 BC – c. 370 BC) was a pre-Socratic Greek philosopher. He is popularly known as "the laughing philosopher" for advocating a cheerful outlook, and for his rhetorical use of irony and ridicule. A pupil of Leucippus, he was an influential pre-Socratic philosopher who formulated an atomic theory of the universe. Of his voluminous writings, only a few fragments of his ethical theory remain, with descriptions by other writers of his atomic theory.