Musing at length on the nature of sin and evil, Strang wrote that of all things that God could give to man, he could never give him experience. Thus, if free will were to be real, said Strang, humanity must be given the opportunity to fail and to learn from its own mistakes. The ultimate goal for each human being was to willingly conform oneself to the revealed character of God in every respect, preferring good to evil not out of any fear of punishment or desire for reward, but rather "on account of the innate loveliness of undefiled goodness; of pure unalloyed holiness."