同一元素的原子在质量和性质上是相同的。

"There is only one real sin, and that is to persuade oneself that the second-best is anything but the second-best."

"The use of traveling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are."

My fans are my motivation. Without them, I am nothing.

A moral being is one who is capable of reflecting on his past actions and their motives.