-Alan Bombria (a friend)
"Damnation is the start of your morality, destruction is its purpose, means and end. Your code begins by damning man as evil, then demands that he ...practice a good which it defines as impossible for him to practice. It demands, as his first proof of virtue, that he accepts his own depravity without proof. It demands that he start, not with a standard of value, but with a standard of evil, which is himself, by means of which he is then to define the good: the good is that which he is not...
We are told from birth that we are sinners and evil doers. We are also told that we are made in the image of god. We are told we have free will and that we must choose to accept Jesus in order to get rid of the sin we got when we were created in god’s image.
“The name of this monstrous absurdity is Original Sin. A sin without volition is a slap at morality and an insolent contradiction in terms: that which is outside the possibility of choice is outside the province of morality. If man is evil by birth, he has no will, no power to change it; if he has no will, he can be neither good nor evil; a robot is amoral. To hold, as man's sin, a fact not open to his choice is a mockery of morality. To hold man's nature as his sin is a mockery of nature. To punish him for a crime he committed before he was born is a mockery of justice. To hold him guilty in a matter where no innocence exists is a mockery of reason. To destroy morality, nature, justice and reason by means of a single concept is a feat of evil hardly to be matched. Yet that is the root of your code."
This is an excerpt from John Galt's speech in the novel Atlas Shrugged by Ayn Rand, and it deals with the Christian notion of original sin.
The longer version can be found here