Theists frequently argue that nontheists must affirm the following: (1) If there is no God, each person must define "good" and "evil" for herself. (2) If each person must define "good" and "evil" for herself, there can be no objective moral standard. (3) God does not exist. (4) Therefore there can be no objective moral standard (i.e., all moral principles are relative). Some nontheists agree (e.g., Sartre) and attempt to live with the implications of (4). Others deny (2), claiming that the existence of an objective moral standard is not dependent on religious commitment. Kai Nielsen is one of the best known and most outspoken members of this group. Nielsen argued that "the nonexistence of God does not preclude the possibility of there being an objective standard on which to base [moral] judgments." He has recently reaffirmed this claim: