Complex sentence: In his early years, he was at school with Page, the artist, and that his proficiency in his studies was hindered by the exuberance of his fancy, which took form in drawings and carvings.
Split into simpler sentences: In his early years, he was at school with Page, the artist. His proficiency in his studies was hindered by the exuberance of his fancy, which took form in drawings and carvings.