最终，我们记住的不是敌人的话语，而是朋友的沉默。
In the end, we will remember not the words of our enemies, but the silence of our friends.
"In the end, we are all alone, and that is the most terrifying truth of all."
Never underestimate the importance of "useless" fundamental research.
The value of a psychological concept is in its life application.