经济学的任务不仅在于解释现象，更在于为社会提供实际的建议和政策。

Investors should focus on the long-term and not be swayed by short-term market fluctuations.

Paint with your heart, and your hands will follow.

Success is not about being the best; it's about being better than you were yesterday.

I have made all the calculations; fate will do the rest.

数学的美在于它揭示隐藏的对称性和真理的能力。