"Discard that unlimited license to evil which consists of claiming that man is imperfect. By what standard do you damn him when you claim it? Accept the fact that in the realm of morality nothing less than perfection will do. But perfection is not to be gauged by mystic commandments to practice the impossible, and your moral stature is not to be gauged by matters not open to your choice. Man has a single basic choice: to think or not, and that is the gauge of his virtue. Moral perfection is an unbreached rationality - not the degree of your intelligence, but the full and relentless use of your mind, not the extent of your knowledge, but the acceptance of reason as an absolute."
- John Galt's radio address, from Atlas Shrugged, p. 1059 (Softcover)