1. Beyond Empathy
2. Woolfolk, R. L. (1998). The curt of souls: Science, values, and psychotherapy. San Francisco.
3. Aristotle. (1962). Nichomachean ethics (M. Ostwald. Trans.). Indianapolis: BobbsMerrill. (Original work probably produced around 340 to 330 BC)
4. Buber, M. (1970). I and thou (W. Kaufman. trans.). New York: Scribners.