Since his early 20s, he has suffered from amyotrophic lateral sclerosis (ALS), a progressive deterioration of the central nervous system that usually causes death within three or four years.

• 因为在20年代早期他患上了肌萎缩性脊髓侧索硬化症（ALS），中枢神经系统逐渐变坏以至于通常会在三至四年内导致死亡。