Girolamo was a precocious child, with an early passion for learning.
Aldo himself, though a precocious student, a scholar of no mean ability, and a publisher of some distinction, was the least remarkable of the three men who gave books to the public under the old Aldine ensign.
Trained in a hard school, he showed a precocious aptitude for war and government.
He was a precocious boy, learning Latin at three, reading Greek at four, and writing sermons at seven.
As a child he was remarkably precocious; at six he is said to have been able to repeat large parts of the Bible and of Pilgrim's Progress by heart.