 Plutarch commended "the saying of Simonides, that he had often felt sorry after speaking but never after keeping silent" and observed that "Simonides calls painting silent poetry and poetry painting that speaks" (later paraphrased by the Latin poet Horace as ut pictura poesis).Diogenes Laërtius, after quoting a famous epigram by Cleobulus (one of ancient Greece's 'seven sages') in which a maiden sculptured on a tomb is imagined to proclaim her eternal vigilance, quotes Simonides commenting on it in a poem of his own