If you lose or forget to bring a cable，adapter or charger，check with your hotel. Most hotels now have a drawer full of cables，adapters and chargers others have left behind，and probably have the one you are missing. You can often claim it after borrowing it.

The era of hardware-defined experiences is over; now it's software-defined.

可持续性不是成本，而是对我们未来的投资。

死亡是唯一真正严肃的哲学问题。

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

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government."

The secret of happiness is freedom, and the secret of freedom is courage.