Why would we think otherwise?

我们为什么会那么想呢
Well, the reason for thinking otherwise,

觉得自己不会死的原因
the reason for not being utterly dismissive of this suggestion,

对于这一说法没那么彻底敌视的原因
is that when people get ill, terminally ill,

是当人们最终生病的时候
it often seems to take them by surprise.

人们经常会感到措手不及
So I've been having you read Tolstoy's novella,

我让你们读过托尔斯泰的中篇小说
The Death of Ivan Ilyich.

《伊万里奇之死》
Ivan Ilyich falls, he hurts himself.

伊万里奇倒下了他伤害了他自己
The injury doesn't get better.

他的伤并没有好转
He gets worse and worse and eventually it kills him.

他的情况越来越糟糕最终他死了
The astonishing thing

令人惊奇的是
is that Ivan Ilyich is shocked

伊万里奇很震惊地