What was one reason that Du Bellay felt sad when he was a llittle boy?

Du Bellay felt sad during his childhood primarily due to his longing for his homeland, the Loire Valley, while he was away in Paris. This sense of nostalgia and homesickness was intensified by his experiences in the bustling city, which stood in stark contrast to the idyllic landscapes of his youth. His poetry often reflects this deep emotional connection to his roots and the melancholy of lost simplicity.