可持续性不仅仅是一个流行词，它是对未来世代的承诺。

The Internet is a powerful tool for education, but it is not a substitute for the teacher.

The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

The forest is a teacher—if we are willing to learn.

最深刻的发现往往来自最简单的问题。

永远不要试图阻止思考，因为你一定会成功。

Literature is the record of human experience.

The photograph is literally an emanation of the referent. From a real body, which was there, proceed radiations which ultimately touch me, who am here.

世界称之为不道德的书，是那些揭露世界自身羞耻的书。