穷人往往缺乏做出正确选择所需的信息，而即使他们拥有这些信息，也常常不信任它。
The poor often lack the information needed to make good choices, and when they do have it, they often don’t trust it.
心理学应该通过结果来衡量心灵。
数学的力量在于它简化复杂事物的能力。
The boundary between physics and mathematics is not as clear-cut as we might think.