时间是一个从我们感知变化的方式中衍生出来的概念。
He has not learned the first lesson of life who does not every day surmount a fear.
Your struggles don't define you; how you overcome them does.
The journey of scientific discovery is filled with challenges, but it is also incredibly rewarding.
The art of leadership is saying no, not saying yes. It is very easy to say yes.