The philosophy of secular humanism (alternatively known by adherents as Humanism, specifically with a capital H to distinguish it from other forms of humanism) embraces human reason, ethics, and social justice while specifically rejecting religious dogma, supernaturalism, pseudoscience or superstition as the basis of morality and decision-making.

Though it posits that human beings are capable of being ethical and moral without religion or God, it neither assumes humans to be inherently evil or innately good, nor presents humans as "above nature" or superior to it. Rather, the humanist life stance emphasizes the unique responsibility facing humanity and the ethical consequences of human decisions. Fundamental to the concept of secular humanism is the strongly held viewpoint that ideology be it religious or political must be thoroughly examined by each individual and not simply accepted or rejected on faith. Along with this, an essential part of secular humanism is a continually adapting search for truth, primarily through science and philosophy.