可持续性不是一种选择，而是任何负责任企业的唯一前进道路。

真正爱国者的职责是保护他的国家免受其政府的侵害。

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.

可持续的世界始于可持续的选择。