Bertrand Russell Quotes（バートランド・ラッセルの名言・警句)

　

The secret of happiness is this: let your interests be as wide as possible, and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile.
　Source: The Conquest of Happiness, 1930, chap.10:Is Happiness still possible?
　More info.:http://russell-j.com/beginner/HA21-080.HTM