在科学中,我们不仅找到答案,还找到更好的问题。
对感受者来说,生活是悲剧;对思考者来说,生活是喜剧。
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。
If you believe in yourself, anything is possible.
The farmer is the only man in our economy who has to buy everything at retail, sell everything at wholesale, and pay the freight both ways.