Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.
最重要的是永远不要停止提问。
The act of painting is a way of thinking.
译文：德行高于才能是君子，才能高于德行是小人。此句成为后世评判人才的根本标准。
The greatest gift you can give someone is your time because you're giving them something you can never get back.