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 secret of a good old age is simply an honorable pact with solitude.

年轻时，你以为会有很多人能与你产生共鸣。后来你才意识到，这种情况一生只会发生几次。

老年人相信每一件事物；中年人猜疑每一件事物；青年人什么都懂。

未来属于那些能够快速适应变化的人。