To be happy, we must not be too concerned with others.
要快乐,我们不必太在意别人。
可以利用身体自身的防御机制来对抗癌症。
The most important thing is to enjoy your life—to be happy—it's all that matters.
Every mathematical problem has a solution; it just takes time and effort to find it.
The only way to survive is to take care of each other.