Labor is the father of wealth, land is the mother of wealth. — William Petty.
劳动是财富之父，土地是财富之母。威廉·配第。
In the history of economic thinking, William Petty is the first to realize that value originates from general Labour; namely, value is determined by Labour time.
在经济思想史上，威廉·配第是最先认识到价值起源于一般劳动，即由劳动时间决定价值的。
From William Petty to Feldstein, land tax research went through three periods: pre -classical, classical and modern periods.
从威廉·配第到费尔德斯坦，土地税收研究经历了前古典期、古典期、现代期三个时期。
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