This is Angus Trumble, the curator at the British Art Gallery who wrote this wonderful book, A Brief History of the Smile looking at the smile in art.

英国美术馆馆长安格斯,他写了这本奇妙的书，微笑简明史，看艺术中的微笑。

耶鲁公开课 - 心理学导论课程节选

So here is a brief and very biased history of engineering.

现在我对工程史做一个的简略,还有一点偏心的介绍

耶鲁公开课 - 生物医学工程探索课程节选