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

　

Courage in war has been recognised from time immemorial as an important virtue, and a great part of the training of boys and young men has been devoted to producing a type of character capable of fearlessness in battle. But moral courage and intellectual courage have been much less studied.
　Source: The Conquest of Happiness, 1930, chap. 17: Th Happy Man.
　More info.:http://russell-j.com/beginner/HA28-020.HTM