我们能留下的最伟大遗产是为后代留下一个更健康的星球。
最伟大的胜利来自最艰难的战斗。
国家是理性的行为体，它们寻求最大化相对权力，以确保在竞争性的国际体系中生存。
Joy sparks the urge to play, interest sparks the urge to explore, contentment sparks the urge to savor and integrate, and love sparks a recurring cycle of each of these urges within safe, close relationships.
未来属于那些相信自己梦想之美的人。
Love is the world's infinite mutability; lies, hatred, murder even, are all knit up in it.
