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