To be aware of the idea of social structure and to use it with sensibility is to be capable of tracing such linkages among a great variety of milieux.

骄矜自大，独断专行，招祸之源。

Animals are such agreeable friends―they ask no questions, they pass no criticisms.

知道自己不知道的比聪明更有用。

释义：培养自己好的品德、性情，即使细微的地方，也一定要谨慎。

真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。