Every tree we plant today is an investment in tomorrow's clean air and healthy ecosystems.
The relation between what we see and what we know is never settled.
The best art comes from the heart, not the mind.
科学的进步是逐渐认识到我们面临的问题并不像它们看起来那么简单。
The horror of the Twentieth Century was the size of each new event, and the paucity of its reverberation.