The strength of a building is not just in its materials, but in the spirit of the people who use it.
建筑的强度不仅在于其材料，还在于使用它的人的精神。
The only way to have a friend is to be one.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
在科学中，唯一不变的就是变化。