Governance society should be based on this common interest. People always want to be happy, but people don't always look happy.
治理社会就应当完全根据这种共同的利益。人们总是愿意自己幸福,但人们并不总是能看清楚幸福。
真正的美国发现还在我们面前。我们精神、我们人民、我们强大而不朽的土地的真正实现尚未到来。
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.