Now many of the ideas that you'll encounter in this class are very simple, very accessible.

你们将在本课程中遇到的许多观点都很简单，很容易理解。

哈佛公开课 - 幸福课课程节选

It's often these very simple but powerful ideas that really take off.

这些简单的观点常常极为有力,能够产生深远的影响。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选