最好的数学是简单的，但又不至于过于简单。
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.
We are all wanderers on this earth. Our hearts are full of wonder, and our souls are deep with dreams.
追求真理需要相当大的努力，这就是为什么只有很少人愿意出于对知识的热爱而去追求真理，尽管上帝在人的心灵中植入了对这种知识的自然渴望。