Law is an imperfect profession in which success can rarely be achieved without some sacrifice of principle. Thus all practicing lawyers – and most others in the profession – will necessarily be imperfect, especially in the eyes of young idealists. There is no perfect justice, just as there is no absolute in ethics. But there is perfect injustice, and we know it when we see it.
Alan Dershowitz. Letters to a Young Lawyer. New York: Basic Books, 2001. p. 9