Language is not just a system of symbols, but a set of practices with social and cultural significance.
理解布莱克-斯科尔斯模型的关键在于认识到它是基于创建无风险对冲的理念。
我是一个美国黑人,我为我的种族感到骄傲。我为自己是谁感到骄傲。我有许多自豪和尊严。
商业的成功不仅仅是创造利润,而是为所有利益相关者创造价值。
Confidence is not 'they will like me'. Confidence is 'I'll be fine if they don't'.