森林的真正价值不能仅用板材英尺来衡量。

世界对感受者来说是悲剧，对思考者来说是喜剧。

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.