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I have always preferred working on concrete problems rather than abstract theories.

兒童書籍應該既挑戰又安慰。

The times they are a-changin'.

最好的歌曲來自于誠實和脆弱的地方。

Always trust your instincts, but be open to collaboration and new ideas.

My legacy is to be the voice of a generation and change the way people think.

過去并不屬于我們，而我們屬于過去。

語出西漢·桓寬《鹽鐵論·疾貪》。表：古代測量日影以計時的標桿。要想讓影子正，就要先將標桿樹直；要想讓下面的人清廉，就要先自己做到清廉。說明上位是下位的表率。

The central task of education is to implant a will and facility for learning; it should produce not learned but learning people. The truly human society is a learning society, where grandparents, parents, and children are students together.