经济周期不仅仅是围绕确定性趋势的波动;它们代表了趋势本身的转变。
心理学必须基于可观察的现象,而非抽象。
I’ve learned that life is too short to be anything but happy.
即使在面临最严峻的挑战时,质量也绝不能妥协。
我创作得越多,知道的就越少。
Every mathematical theorem is a story waiting to be told, a mystery waiting to be unraveled.