regulate a calendar on the Chinese model. Character Ögedei was also known to be a humble man, who did not believe himself to be a genius, and who was willing to listen to and use the great generals that his father left him, as well as those he himself found to be most capable. He was the Emperor (Khagan) but not a dictator. Like all Mongols at his time, he was raised and educated as a warrior from childhood, and as the son of Genghis Khan, he was a part of his father's plan to establish a world empire. His military experience was notable for his willingness to listen to his generals and adapt to circumstances. He was a pragmatic person, much like his father, and looked at the end rather than the means. His steadiness of character and dependability were the traits that his father most valued, and that gained him the role of successor to his father, despite his two older brothers. Ögedei was considered to be his father's favorite son, ever since his childhood. As an adult, he was known for his ability to sway doubters in any debate in which he was involved, simply by the force of his personality. He was a physically big, jovial, and charismatic man, who seemed mostly to be interested in enjoying good times. He was intelligent and steady in character. His charisma was partially credited for his success in keeping the Mongol Empire on the path that his father had set. Ögedei was a pragmatic man, though he made some mistakes during his reign. Ögedei had no delusions that he was his father's equal as a military commander or organizer and used the abilities of those he found most capable. Ögedei was well known for his alcoholism. Chagatai entrusted an official to watch his habit, but Ögedei managed to drink anyway. It is commonly told that Ögedei did so by vowing to reduce the number of cups he drank a day then having cups twice the size created for his personal use. When he died at dawn on 11 December 1241, after a late-night drinking bout with Abd-ur-Rahman, the people blamed the sister of Tolui's widow and Abd-ur-Rahman. The Mongol aristocrats recognized, however, that the Khagan's own lack of self-control had killed him. The sudden death of Tolui in 1232 seems to have affected Ögedei deeply. According to some sources,