我们无法不了解历史。
Sustainability isn't just an option; it's our responsibility to future generations.
自由是一种当你看着它时会变化的东西，就像森林近距离看时树木茂密，但从外面，从空旷的草地上看，你看到它的真正界限。自由与锁链或你的笼子有多宽无关。
In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.
