Paolo Uccello (Italian pronunciation: [ˈpaːolo utˈtʃɛllo]; 1397 – 10 December 1475), born Paolo di Dono, was an Italian painter and a mathematician who was notable for his pioneering work on visual perspective in art. Giorgio Vasari in his book Lives of the Artists wrote that Uccello was obsessed by his interest in perspective and would stay up all night in his study trying to grasp the exact vanishing point. He used perspective in order to create a feeling of depth in his paintings and not, as his contemporaries, to narrate different or succeeding stories. His best known works are the three paintings representing the battle of San Romano (for a long time these were wrongly entitled the "Battle of Sant' Egidio of 1416").