《史记·三十世家·三王世家》
刘旦自以为年长应该立为皇帝，与齐王之子刘泽等人图谋叛乱，扬言说： 我哪里能让弟弟在！
自以长子当立，与齐王子刘泽等谋为叛逆，出言曰： 我安得弟在者！
Liu Dan thought to himself that he was older and should be made emperor, so he plotted a rebellion with Liu Ze, the son of King Qi, and said, How can I let my younger brother be emperor!