The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

我总是努力保持谦逊和渴望。

永不放弃，永不投降。

我的科学研究给我带来了极大的满足；我深信，用不了多久，全世界都会承认我的工作成果。

I believe in hard work and persistence.

And that's OK.I'm ready to let you go.I want you to know now,So we both can savor every moment we have left together.The good and the bad.We have given each other All that we have.