求保爾柯察金那句名言的英文版！

Man's dearest possession is life, and it is given to him to live but once. He must live so as to feel no torturing regrets for years without purpose, never know the burning shame of a mean and petty past--so live that, dying, he can say: all my life, all my strength were given to the finest cause in all over the world--the fight for the liberation of mankind. ---Ostorovsky