Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

设计不仅仅是外观和感觉。设计在于它的运作方式。

成功的最好方式是帮助别人成功。