As leader of the Uchiha, Fugaku was focused on the clan's interest and welfare and had a strong sense of responsibility. While outwardly Fugaku seemed strict and neglectful towards his eldest and youngest sons respectively, coupled with his devotion and focus of his clan's welfare led him to seem hateful and non-negotiable, he was still a very caring individual to his sons. He was also much wiser and more patient than his clan, genuinely wanting to preserve peace in Konoha.