Poverty is not inevitable; it's a solvable problem.
贫困并非不可避免；它是一个可以解决的问题。
引力的存在是最明显的实验事实，但从理论角度来看，它是最神秘的力量。
质量不是一种行为，而是一种习惯。
The deepest principle in human nature is the craving to be appreciated.
我不是说唱歌手，我是一个数学的传奇。
The heart has its reasons, which reason does not know.
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
The most dangerous of all falsehoods is a slightly distorted truth.