"The past is never dead; it’s not even past."
Natural experiments are a powerful tool for understanding causal relationships in the real world.
The best moments in our lives are not the passive, receptive, relaxing times... The best moments usually occur if a person's body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.
企业的成功不在于规模大小，而在于是否能够持续创新。
Escribir es un acto de amor hacia la humanidad.
唯一真正的财富是灵魂的财富。
"Ein Buch ist wie ein Garten, den man in der Tasche trägt."