“When Thales was asked what was difficult, he said, To know one's self. And what was easy, To advise another.” KnowsSaidSelfEasyDifficultDifficultyAdvise Author:Diogenes Laertius
“Xenophanes speaks thus:-And no man knows distinctly anything,And no man ever will.” KnowsMenSpeak Author:Diogenes Laertius
“Euripides says,-Who knows but that this life is really death,And whether death is not what men call life?” KnowsMenLife IsThis Life Author:Diogenes Laertius