每个人的生活都是由许多日子组成的,日复一日。我们在自己之中行走,遇见强盗、幽灵、巨人、老人、年轻人、妻子、寡妇、相爱的兄弟,但总是遇见我们自己。
The worth of a mental process is in its service to life.
Mathematics is the language with which God has written the universe.