With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

太阳，带着所有围绕它运行并依赖它的行星，仍然能催熟一串葡萄，仿佛它在宇宙中无事可做。

每一刻都是重新开始的机会。

Life is a series of choices, and every choice has a consequence.

The greatest happiness is to know the source of unhappiness.

能源革命的核心是清洁高效，煤炭行业必须主动适应这一趋势。