可持续性不是一个流行词，而是对后代的承诺。

The best literature is that which challenges us, which makes us think, which forces us to confront the uncomfortable truths of our existence.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

The journey of a thousand miles begins with a single step.

预测未来的最好方法就是创造它。