生活要么是一次大胆的冒险，要么什么都不是。

The only relationship that can make both partners happy is one in which sentimentality has no place and neither partner makes any claim on the life and freedom of the other.

研究心理过程需要实验和比较方法。

Sustainability isn't an option - it's our responsibility to the next generation.

交易者最大的敌人是希望。