如果你仅仅企盼幸福，这不难做到；但我们企盼比别人更幸福，则总是难于做到，因为别人的生活并非如我们以为的那样幸福。——法国政治哲学家孟德斯鸠

　　If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are. - Montesquieu (1689-1755), French political philosopher