在未来的存在中，我们将把我们认为的现在存在视为一场梦，这绝不是一种非理性的幻想。

勇气不是没有恐惧，而是战胜恐惧。

In chemistry, as in life, the most profound truths are often the simplest.

The future of democracy depends on the ability of democratic societies to reform themselves and adapt to new challenges.