Was it just the Greek sense of honor and propriety that kept them from doing more creative sneak attack?

是否是希腊人的荣誉感和道德,使他们不会采取偷袭的方式

耶鲁公开课 - 古希腊历史简介课程节选

Let's sneak in one more derivative here, which is to take the derivative of the derivative.

我们再求一次导数,也就是对导数求导

耶鲁公开课 - 基础物理课程节选