儿童的一切教育都必须遵循一个原则，即帮助孩子身心自然的发展。
电子并非一个简单不可分割的实体，而是一个复杂系统，其行为只能通过量子力学定律来理解。
Character is doing the right thing when nobody's looking. There are too many people who think that the only thing that's right is to get by, and the only thing that's wrong is to get caught.
The best way out is always through.
