The best way to learn mathematics is to do mathematics.
最优财政政策要求税收随时间平滑,因为突然的变化会扭曲经济决策。
I don’t care if you’re a friend or a foe, I’m still gonna be me.
"The greatest glory in living lies not in never falling, but in rising every time we fall."
The most sustainable building is the one that people love enough to maintain for generations.
"Life is a journey that must be traveled no matter how bad the roads and accommodations."