An epigram is a brief, interesting, memorable, sometimes surprising or satirical statement. The word derives from the Greek ἐπίγραμμα (epígramma, "inscription", from ἐπιγράφειν [epigráphein], "to write on, to inscribe"). This literary device has been practiced for over two millennia. The presence of wit or sarcasm tends to distinguish non-poetic epigrams from aphorisms and adages, which typically do not show those qualities. Source: Wikipedia (en)