Noddings' first sole-authored book "Caring: A Feminine Approach to Ethics and Moral Education" (1984) followed close on the 1982 publication of Carol Gilligan's ground-breaking work in the ethics of care "In a Different Voice". While her work on ethics continued, with the publication of "Women and Evil" (1989), and later works on moral education, most of her later publications have been on the philosophy of education and educational theory. Her most significant works in these areas have been "Educating for Intelligent Belief or Unbelief" (1993) and "Philosophy of Education" (1995).