1,200 years before Descartes said his famous thing about "I think therefore I am," this guy, St. Augustine, sat down and wrote "Fallor ergo sum" -- "I err therefore I am."
1.200 anys abans que Descartes digués la seva famosa frase "Penso, per tant existeixo." aquest noi, St Agustí, va asseure's i va escriure "Fallor ergo sum" -- "Erro, per tant existeixo"