This document discusses 20 different nursing theories and 3 moral theories. It provides an overview of each theory, including the theorist and key concepts. Some of the major nursing theories covered include Florence Nightingale's focus on the patient's environment, Faye Abdellah's 21 nursing problems, Virginia Henderson's 14 basic human needs, and Betty Neuman's health care systems model. The moral theories briefly discussed include Freud's superego, Erickson's virtues, and Kohlberg's stages of moral development.