The difference between good and great is the attention to detail.
数学不是关于数字、方程、计算或算法的:它是关于理解的。
You have to be willing to fail to succeed.
过去是幽灵,未来是梦想,我们拥有的只有现在。
在一个国家中,一个公民的自由是对另一个公民自由的威胁。
Identify your problems, but give your power and energy to solutions.
A non-writing writer is a monster courting insanity.