最成功的产品往往是解决日常问题的最简单方案。

日常生活中的家事，儿童都非常喜欢参与。

一个阅读的孩子永远不会感到无聊。

There are other reasons --There are other reasons why it's perhaps harder now to feel calm than ever before. One of these, and it's paradoxical, because it's linked to something that's rather nice, is the hope we all have for our careers. Never before have expectations been so high about what human beings can achieve with their life span.

The march of invention has clothed mankind with powers of which a century ago the boldest imagination could not have dreamt.

做产品要有敬畏之心，要对用户负责。