Ars longa, vita brevis, occasio praeceps, experimentum periculosum, iudicium difficile.
Hippocrates. We know it best as the phrase “life is short”, but I didn’t know that was shortened from a longer, more interesting line: “Life is short, the art long, opportunity fleeting, experiment fallible, judgment difficult.” Ars longa, vita brevis - Wikipedia, the free encyclopedia.