The balance between economic growth and environmental responsibility is the defining challenge of our time.

每个独裁者的梦想都是把他的国家变成一个没有围墙的监狱。

略知一点哲学可能使人倾向于无神论，但深刻的哲学可能使人回归到宗教。

Happiness depends on the inner self, not the external world.

Leaders must be willing to take risks if they want to create meaningful change.

Don’t let fear stop you from taking the first step.