任何改变，即使是为了变得更好，也总是伴随着缺点和不适。
Any change, even a change for the better, is always accompanied by drawbacks and discomforts.
做数学的艺术在于找到那个包含所有普遍性萌芽的特殊案例。
The major credit I think Jim and I deserve... is for selecting the right problem and sticking to it.
我认为我和吉姆值得称赞的主要原因是...选择了正确的问题并坚持研究它。
Dairy farming is both an art and a science—respecting both is essential for success.