If you don't change yourself, you will be changed by others.
如果你不改变自己,就会被别人改变。
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
学习数学的唯一方法就是做数学。
爱是什么样子?它有双手来帮助他人。它有双脚匆匆赶往穷人和需要帮助的地方。它有眼睛看到痛苦和贫困。它有耳朵听到人们的叹息和悲伤。