我们这个时代的巨大挑战是建立能够管理现代社会复杂性的机构。
The great challenge of our time is to build institutions that can manage the complexity of modern societies.
The choice for mankind lies between freedom and happiness and for the great bulk of mankind, happiness is better.
Without ecological balance, there is no real economic benefit.
第一步是确定某件事是可能的；然后概率就会发生。