Quintus Horatius Flaccus, Horace's Art of Poetry (1680)
“ We Weep and Laugh as we see others doe,He only makes me sad who shews the way,And first is sad himself, then (Telephus) I feel the weight of your Calamities,And fancy all your miseries my Own, But if you Act them ill, I sleep or laugh:Your looks must needs alter, as your Subject doesFrom kind to fierce, from wanton to severe,For Nature forms, and softens us within,And writes our fortunes changes in our face.Pleasure enchants, impetuous Rage transports,And grief dejects, and wrings the tortur'd Soul,And these are all interpreted by Speech ”
