数学中最重要的技能是清晰思考的能力。
The most important skill in mathematics is the ability to think clearly.
"Stories are like rivers, always flowing, always changing."
To make something good， just do it. To make something great， just re-do it， re-do it， re-do it. The secret to making fine things is in remaking them.
If you are not willing to learn, no one can help you. If you are determined to learn, no one can stop you.