The key to success is to focus on goals, not obstacles.

你看，在生活中，很多人知道该做什么，但很少有人真正去做他们知道的事。知道是不够的！你必须采取行动。

Law is not a system of rules, but a system of principles.

Change is inevitable. Growth is optional.

However difficult life may seem, there is always something you can do and succeed at.

最优雅的数学证明是那些以简单揭示真理的证明。