Ut pueri infantes credunt [signa omnia aenea vivere et esse homines], sic isti [somnia ficta vera] putant, credunt [signis cor inesse in aenis].
as boy-M-PL-NOM infant-M-PL-NOM believe-3-PL sign-N-PL-ACC all-N-PL-ACC bronze-N-PL-ACC live-INFIN and be-INFIN human-M-PL-ACC thus that-M-PL-NOM dream-N-PL-ACC create-PPP-N-PL-ACC true-N-PL-ACC think-3-PL believe-3-PL sign-N-PL-ABL heart-N-S-ACC be in-INFIN in bronze-N-PL-ABL
As young boys believe all bronze images are alive and are human, so those people think the stuff of dreams is real, they believe a heart exists in bronze images.