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.

I don’t think you should ever feel like you’ve achieved everything. You always have to keep pushing.

最好的领导者是那些能够激发行动的人。

写作没什么诀窍。你只需坐在打字机前流血。

可持续性不仅仅是植树造林；而是确保我们今天采取的每一个行动都不会损害未来。