He says young entrepreneurs a unique opportunity to make a profit while making a difference for communities around the world.

VOA: standard.2009.12.04

And all of a sudden, I moved from being a professor here, which previously had been my greatest opportunity, to leading this very large non-for-profit organization that had both national and international responsibilities.

所以突然间，我从普林斯顿的教授，这曾经是我最大的机遇，变成了这个公益组织的领导者,负有国内和国际的双重责任。

普林斯顿公开课 - 人性课程节选

We throw our city open to the world and never exclude foreigners from any opportunity of learning and observing even though the eyes of an enemy may profit from our liberality " Pericles boasts once again.

我们的城邦向世界敞开大门,且从不排除让外国人,向我们学习及观摩的机会,就算敌人可能因此,从我们的慷慨中受益“，伯里克利斯再次自夸。

耶鲁公开课 - 政治哲学导论课程节选