数学中最重要的技能是清晰思考的能力。
The meaning of life is contained in every single expression of life. It is present in the infinity of forms and phenomena that exist in all of creation.
The only limit to our realization of tomorrow is our doubts of today.
在每个角色中，都有我的一部分，而在我身上，也有我扮演过的每个角色的一部分。