Sometimes the hardest part of the journey is believing you're worthy of the trip.

最好的故事不仅仅是娱乐，它们在最后一页翻过之后还会长久地留在心中。

如果你无法向非科学家解释你的化学研究，说明你理解得还不够深入。

To enjoy freedom we have to control ourselves.

的确，人们中间流行着一种奇怪的观点，即房屋、山脉、河流，总之，所有感知对象，都具有超越其被理解感知之外的自然或真实存在。

Sustainability isn't a cost; it's an investment in relevance and longevity.

Every child should have mud pies, grasshoppers, water bugs, tadpoles, frogs, mud turtles, elderberries, wild strawberries, acorns, chestnuts, trees to climb, brooks to wade in, water lilies, woodchucks, bats, bees, butterflies, various animals to pet, hayfields, pine-cones, rocks to roll, sand, snakes, huckleberries and hornets; and any child who has been deprived of these has been deprived of the best part of education.