From Pico della Mirandola’s Oration on the Dignity of Man (5.22).
Nec te celestem neque terrenum, neque mortalem neque immortalem fecimus, ut tui ipsius quasi arbitrarius honorariusque plastes et fictor, in quam malueris tute formam effingas…
And I have made you neither celestial nor terriestrial, neither mortal nor immortal, so that, like a free and able sculptor and painter of yourself, you may mold yourself wholly in the form of your choice.
A scan of the first, 1496 edition is available here
Extracts 