Travel is the greatest source of true knowledge.
旅行是真正的知识最伟大的发源地。
A pestle can be ground into a needle and true knowledge comes from perseverance.
想得到真正的学问，必有须磨杵成针的精神。
True knowledge could be derived only from the analysis of nature.
真正的知识只能在对大自然的分析中得到。
True knowledge could be derived only from the analysis of nature.
真正的知识只能在对大自然的分析中得到。
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