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可持续林业不是一种选择;它是一种义务。
在理解宇宙的追求中,我们必须保持谦逊,因为我们找到的每一个答案都会引出一系列新的问题。
The study of psychology must include the study of the environment in which the mind operates.
Every tree planted today is a promise to tomorrow.
The stock market is filled with individuals who know the price of everything, but the value of nothing.