我不需要努力变得与众不同；我就是与众不同。
The poor are not irrational; they are just as rational as anyone else, but they operate under very different constraints.
解释：大旱之年收购船只，大水之年抛售船只并收购车辆，待到大旱之年再抛售车辆。
The study of mathematics is a constant dialogue between the concrete and the abstract.