The investor's chief problem—and even his worst enemy—is likely to be himself.

Liberty is the right to do what the law permits.

经济学的第一课是稀缺：从来没有足够的任何一种东西能够满足所有人对其需要。政治学的第一课是摒弃经济学的第一课。

Sustainability is the future of quarrying, and we must act now.

口是伤人斧，言语锐如刀，语言的力量巨大，学会好好说话。  

诗歌不是一种奢侈品，而是一种必需品。