英国哲学家,数学家,罗素说:世界上只有三件事是我生命的源泉:对爱情的渴望,
对知识的追求,和对人类苦难的不可容忍 - “Three passions, simple but overwhelmingly
strong, have governed my life: the longing for love, the search for knowledge,
and unbearable pity for the suffering of mankind. These passions, like
great winds, have blown me hither and thither, in a wayward course, over
a deep ocean of anguish, reaching to the very verge of despair. … This
has been my life. I have found it worth living, and would gladly live it
again if the chance were offered me. (1967, I, 3━4)”。