In the study of nature, imagination must be guided by the rigid rules of logic and experiment.
在研究自然时，想象力必须受到逻辑和实验的严格规则指导。
The defining characteristic of pessimists is that they tend to believe bad events will last a long time, will undermine everything they do, and are their own fault.
A company’s culture is defined by the actions of its leaders, not just their words.
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。