But a top Iranian religious leader told a prayer service at Tehran University that execution was needless.

VOA: special.2011.02.19

And also we are able to tap into the expertise of professors, not just at the University of Pennsylvania, but also at other schools as well so that we can bring in the very top leading researchers and practitioners of positive psychology.

我们还聘请多位教授，不局限于宾州大学，还有其他大学,我们请来最杰出的研究员,和积极心理学的从业者。

哈佛公开课 - 幸福课课程节选

He later taught at top universities including Duke,Harvard and the University of Chicago.

VOA: special.2009.12.27