But he can be stubborn, abrasive and quick to anger, terminating a conversation by spinning around and rolling off, sometimes running one of his wheels over the toes of an offender.

• 他喜欢和学生、同事们一起参加社交活动，参加摇滚音乐会，有时还到迪斯科舞厅去，坐在轮椅上转圈子。