Complex sentence: By the age of 8, von Neumann was familiar with differential and integral calculus, but he was particularly interested in history, reading his way through Wilhelm Oncken's 46-volume "Allgemeine Geschichte in Einzeldarstellungen".
Split into simpler sentences: By the age of 8, von Neumann was familiar with differential and integral calculus, but he was particularly interested in history. He read his way through Wilhelm Oncken's 46-volume "Allgemeine Geschichte in Einzeldarstellungen".