The development of formal systems has revolutionized our understanding of mathematics.
永远不要让任何人告诉你你做不到某件事。
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。
最好的故事是无法被单一解释所包含的故事。
I dream that my son will grow up to be a good person, a free person. I dream that someday you will return to revisit the land of our childhood. I dream that flowers will bloom in the streets again...and kites will fly in the skies!
Sustainability isn’t a buzzword; it’s a business imperative.