Three passions,simple but overwhelmingly strong, have governed my life:the search for knowledge,
the long foe love, 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 great ocean of anguish, reaching to the very verge of despair.
I have sought knowledge. I have wished to understand the hearts of man.
I have wished to know why the stars shine .And I have tried to