Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

Profit should never come at the expense of people or the planet.

睁开眼睛，看看内心。你对你现在的生活满意吗？

Among thousands of people, you meet those you've met. Through thousands of years, across the boundless wilderness of time, you happen to meet them, neither earlier nor a bit too late. There is nothing to be said except to ask lightly, "Oh, you're here too?"