教师是太阳，学生是月亮。教师发光，学生反射。
The act of writing is an act of courage.
The modern state is characterized by its ability to concentrate and use power effectively.
The study of mathematics is a constant dialogue between the concrete and the abstract.
The whole difference between construction and creation is exactly this: that a thing constructed can only be loved after it is constructed; but a thing created is loved before it exists.
