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Every improvement in the circumstances of the society tends either directly or indirectly to raise the real rent of land, to increase the real wealth of the landlord, his power of purchasing the labour, or the produce of the labour of other people.

幸福就是珍惜小事。

Every material has a memory, and every action leaves a trace.

模型檢查是驗證有限狀態并發系統正確性的強大技術。

心靈是一個不斷重組的系統。