你在掌控之中,有没有你想去的地方?
在数学中,就像在生活中一样,最优雅的解决方案往往来自于对问题的深刻理解。
80% of life's most defining moments take place by age 35.
Courage is not the absence of fear, but rather the judgment that something else is more important than fear.
Short-term gains at the expense of the environment will always lead to long-term losses.