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農業科學家的責任就是讓土地多產糧食，讓農民多收糧食。

Man's main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality.

Ingersoll's story of the man that went down from heaven on a reduced-rate excursion ticket good for 30 days --- and tried to sell his return ticket.

所以富貴的人極其奢侈,二孤兒寡婦卻受饑挨餓,雖然想天下不亂,也不可能。國君若真的希望天下太平而不希望天下大亂的話,如果要吃喝,就不能不節儉。