Self-education is, I firmly believe, the only kind of education there is.

"The past is never dead. It's not even past."

林业创新意味着在尊重塑造了这个行业几代人的传统的同时拥抱技术。

The poor are not lazy; they are just caught in a system that makes it very hard for them to escape poverty.

地理带的研究揭示了自然界的统一性，尽管它表面上看起来多样。

人类以可预测的方式非理性。