记忆就是对抗消失的斗争。
To remember is to fight against disappearance.
代数分析是所有科学中最广泛和最确定的;它是唯一具有不变和可靠方法的一门科学。
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge.
试图阻止知识前进是没有好处的。无知永远不比知识好。
无论什么年龄,人心只会向同样敞开的心敞开。