The epigraph of James Joyce's Portrait Of The Artist As A Young Man.
Originally from a description of Daedalus in the Metamorphoses of Ovid (P. Ovidius Naso), VIII:188.
Translation: "And he sets his mind to unknown arts" (in Metamorphoses the line continues, "and changes the laws of nature").
The full line, in Latin, is:
...et ignotas animum dimittit in artes naturamque nouat.