Q1118There is only one good, knowledge, and one evil, ignorance.
Reported by Diogenes Laertius in Lives of the Eminent Philosophers (3rd century AD), a biographical collection written six centuries after Socrates — so it is tradition rather than transcript. It compresses the Socratic conviction that wrongdoing flows from ignorance: no one errs knowingly, so the deepest cure for evil is understanding.





