The following sources are recommended for those seeking a breadth of understanding of our human nature, a basis for how we come to understand our place in the world and a solid foundation with which to form a personal philosophy:
- Adler, A. (1927, 1992) Understanding Human Nature, Oxford England, Oneworld Publications
- Anderson, Clifford M.D. (1995) The Stages of Life, New York, The Atlantic Monthly Press
- Berger, P. L. (1966) The Social Construction of Reality: A Treatise in the Sociology of Knowledge, New York, Doubleday
- Branden, N. (1994) The Six Pillars of Self Esteem, New York, Bantam Books
- Covey, Stephen (1989) The Seven Habits of Highly Effective People, New York, Simon and Schuster
- Dawkins, Richard (1976) The Selfish Gene, Oxford England, Oxford Landmark Science
- Frankl, V. E. (1959, 1962, 1984) Mans Search for Meaning, New York, Washington Square Press
- Freud, Sigmund, (1961) Civilization and its Discontents, London, W.W. Norton & Company, Inc.
- From, Erich (1947) Man for Himself, An Inquiry Into the Science of the Psychology of Ethics, New York, Random House
- Harris, Judith Rich (2006) No Two Alike, New York, W.W. Norton
- Kiersey, D. (1998) Please Understand Me II: Temperament Character Intelligence, Del Mar, CA, Prometheus Nemesis Book Company
- Kirschenbaum, H. and Henderson, V. L. (1989) The Carl Rogers Reader, New York, Houghton Mifflin
- Lakeoff, G. (2002) Moral Politics, How Liberals and Conservatives Think, Chicago, The University of Chicago Press
- Maslow, A. H. (1976) Motivation and Personality, Addison Wesley Educational Publications
- Peterson, Christopher (2006) A Primer in Positive Psychology, New York, Oxford University Press
- Pinker, S. (2002) The Blank Slate, New York, Viking Penguin Putnam, Inc.
- Popper, Karl (1959) The Logic of Scientific Discovery, Routledge, London and New York
- Rokeach, M. (1960) The Open and Closed Mind, New York, Basic Books
- Russell, Bertrand, (1930) The Conquest of Happiness, New York, Liveright Publishing
- Senge, P. (1990) The Fifth Discipline: The Art and Practice of the Learning Organization, New York, Doubleday
- Sulloway, F. J. (1996) Born to Rebel: Birth Order, Family Dynamics and Creative Lives, New York, Pantheon Books, Vintage Books
- Tooby, John and Cosmides, Leda (2005) The Handbook of Evolutionary Psychology Edited by Richard Buss, Hoboken New Jersey, John Wiley and Sons, Inc.
- Wilson, E. O. (1978) On Human Nature, Cambridge MA, London, Harvard University Press