The most exciting breakthroughs of the 21st century will not occur because of technology but because of an expanding concept of what it means to be human.
布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数,尤其是波动率。
Success comes from persistence and hard work.
小额信贷的真正力量,是让穷人相信自己的潜力。