不要为未来担忧，不要为过去哭泣。

Following your bliss is a recipe for paralysis if you don’t know what you are passionate about. A better motto for most youth is “master something， anything”. Through mastery of one thing， you can drift towards extensions of that mastery that bring you more joy， and eventually discover where your bliss is.

我不是政治家，我只是一个关心他人的人。

The process of solving a mathematical problem is often more important than the solution itself.