儿童的进步不是取决于年龄，而是取决于能够自由地观看他周围的一切。

理性是统治一切的主宰。

Sometimes we stare so long at a door that is closing that we see too late the one that is open.

写作是一种理解世界的方式。它是一种在混乱中强加秩序的方式。

I'm a perfectionist, but I've learned to let go.

Efficiency and environmental responsibility can—and must—go hand in hand.