About 80 percent of the information in the brain is accessed through the eyes. Blindness is the most feared disease after death and terminal illness. Losing your eyes can have a serious impact on your work and life. It is also the most serious of the disabilities we have discussed.

If I lose my voice, I can still type and communicate with others. If I lose my hearing, I can still observe the beauty of the world. If I lose my legs, I can still surf the Internet without leaving my home. But now I've lost my eyes. I can't even live on my own. I can only rely on my parents to support me for the rest of my life. That's terrible. My parents had already made an extremely failed investment in raising me to this age, and now their only child was a complete waste and would drag the family down.

Back to my own body. After losing my sight, my glorious life turned into a puddle. I can't leave the care of others at all times, and will have no privacy at all. There was no way to operate on my own when I wanted to go and find out what was of interest. Many interesting things would never be accessible. I would no longer have any access to happiness. A life without joy is meaningless. There is a great likelihood that I will die an early death in depression, perhaps seeking euthanasia.

I am not an ambitious genius, nor do I have the confidence that I can overcome my illness and still remain positive about life. I also don't think there is anyone in the world other than my parents who would want to raise a blind person. So the day my parents die of old age will be my deadline for leaving this world. The problem is not really complicated. If you can live, live, if you can't live, die, it's simple, right?

There is no need to worry before death comes, because when we are alive, death has not yet come; when death comes, we are already gone. It is important to believe that death has nothing to do with us because everything good or bad is in the senses and death is the deprivation of the senses. All things that do not trouble one when they actually come, and all sorrows that are caused in one's ex ante outlook, are also empty and untrue.

大脑中大约百分之80的信息都是通过眼睛获取的。失明是仅次于死亡与绝症最让人恐惧的病症。失去眼睛以后，会严重影响工作与生活。它也是我们讨论的几种残疾中最严重的。

如果我失去了声音，我还可以打字和别人交流。如果失去了听力，我还可以观察世界的美好。如果失去了双腿，我还可以足不出户地上网。但现在我失去的是眼睛。我连依靠自己生活下去都做不到。我只能依靠父母来养活下半辈子。那很可怕。父母把我养到这么大已经是一笔极其失败的投资了，现在他们唯一的孩子彻底成了废物，会拖累一家人。

再说回我自己的身体。失明以后，光鲜亮丽的人生变成了一滩烂泥。我每时每刻都离不开别人的照顾，也就将毫无**可言。想要去了解感兴趣的内容，也没有办法自己操作。许多有趣的事物都永远接触不到了。我再也没有任何获得快乐的途径了。感受不到快乐的人生是没有意义的。我有极大可能会在消沉中早逝，或许寻求安乐死也说不定。

我不是什么志向远大的天才，也没有自信能克服病魔仍然保持积极面对人生。我也不觉得这世上除了父母以外还会有谁愿意养一个瞎子。所以父母老死的那一天会是我离开人世的最后期限。其实问题也并不复杂，能活就活着不能活就去死，很简单吧。

在死亡来临之前没有必要担心，因为当我们活着的时候，死亡还没有来临；当死亡来临的时候，我们已经不在了。要相信死亡与我们无关，因为一切的好与坏都在感觉之中，而死亡是感觉的剥夺。所有实际来临后不会使人烦恼的事情，在人们的事前展望中引起的悲伤也都是空洞不实的。