This is a thread for discussion Democritus' position that nothing is truly real except atoms and void statement, especially in context with Diogenes of Oinoanda fragment 7:
Quote from Diogenes of OinoandaFr. 7
Even Democritus erred in a manner unworthy of himself when he said that atoms alone among existing things have true reality, while everything else exists by convention. For, according to your account, Democritus, it will be impossible for us even to live, let alone discover the truth, since we shall be unable to protect ourselves from either fire or slaughter or [any other force].