1. Stewart, Hugh Fraiser, Rand, Edward Kennard, and Tester, S. Jim (1973). Boethius: The Theological Tractates and The Consolation of Philosophy, Heinemann.
2. Facing up to the Problem of Consciousness;Chalmers;Journal of Consciousness Studies,1995
3. Damasio, Antonio (1994). Descartes’ Error: Emotion, Reason, and the Human Brain, G. P. Putnam’s Sons.
4. Damasio, Antonio (2003). Looking for Spinoza: Joy, Sorrow, and the Feeling Brain, Harcourt.
5. Immortality and Boredom;Fischer;The Journal of Ethics,2014