User needs are both the starting point and the ultimate goal of product development.

The greatest prison people live in is the fear of what other people think.

The most interesting art comes from contradiction.

出自先秦《荀子·不苟》。君子加强道德修养没有比“诚”更重要的，达到了“诚”的要求也就到了修身养性的最高境界了。

我不抱怨，不找借口，只是继续前进。