Diogenes Laertius (pronounced 'die-OJ-uh-neez ley-UH-shus'; Greek: Διογένης Λαέρτιος, Diogenēs Laertios; lived c. 3rd century CE) was a biographer of the Greek philosophers. Nothing is known about his life, but his surviving Lives and Opinions of Eminent Philosophers is a principal source for the history of Greek philosophy.
“One original thought is worth a thousand mindless quotings.”
“We have two ears and only one tongue in order that we may hear more and speak less.”
“Step out of my sunlight.”
“Discourse on virtue and they pass by in droves. Whistle and dance and shimmy, and you've got an audience!”
“We are more curious about the meaning of dreams than about things we see when awake.”
“One day a man invited him into a richly furnished house, saying 'be careful not to spit on the floor.' Diogenes, who needed to spit, spat in his face, exclaiming that it was the only dirty place he could find where spitting was permitted.”
“The tired ox treads with a firmer step”