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我想揭示大自然的秘密，用來造福人類。我認為，在我們的短暫一生中，最好的貢獻莫過于此了。

The most important political development of the last two centuries has been the rise of the modern state.

我不是時尚達人。我就是時尚。

The United States, in their expansive capacity, are capable of containing within their limits the whole population of the earth.

The future of forestry is circular, not linear.

因果推理的力量在于它允許我們預測我們從未采取的行動的效果。