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真相很少是純粹的，也從不簡單。

美好的生活是由愛所激發(fā)，由知識所指導的。

The health of the soil determines the health of the herd—never forget that.

The poverty of our century is unlike that of any other. It is not, as poverty was before, the result of natural scarcity, but of a set of priorities imposed upon the rest of the world by the rich.

每一次航行都是自然這本巨著中新的一頁，由發(fā)現(xiàn)之手書寫。