The deepest theorems in mathematics often have the simplest statements.
数学中最深刻的定理往往有最简单的表述。
The best fertilizer for any business is a culture of continuous learning.
有些书最好的部份仅止于封面与书背。
Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
The truth is rarely pure and never simple.
历史的真相常常被尘埃掩埋，但它永远不会消失。