Julius Caesar · Lucretius Were Julius Caesar and Lucretius alive at the same time? Yes. Julius Caesar and Lucretius were alive at the same time for 38 or 39 years, from BC to 55 BC. Julius Caesar was 5 or 6 when Lucretius was born.Julius Caesar was 45 when Lucretius died, aged 38 or 39. Julius CaesarRoman general and dictatorBorn July 100 BC · died 15 March 44 BC, aged 55Lucretius1st-century BC Roman poet and philosopherBorn 94 BC · died 15 October 55 BC, aged 38 or 39 CiceroJulius CaesarLucretiusCleopatraVirgilHoraceAugustus Julius Caesar and Lucretius in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.