唯一真正的发现之旅不在于寻找新的风景,而在于拥有新的眼光。
The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
The boundary between physics and mathematics is not as clear-cut as we might think.
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.