object, they treat it as if it is a rational being capable of understanding their feelings and language. Good examples are prayer to gods to alleviate drought or to help a sick person or cursing at a computer that has ceased to function. P. M. S. Hacker's Tetraology on Human Nature A foremost Wittgensteinian, P. M. S. Hacker has recently completed a tetralogy in philosophical anthropology: “The first was Human Nature: The Categorical Framework (2007), which provided the stage set. The second was The Intellectual Powers: A Study of Human Nature (2013), which began the play with the presentation of the intellect and its courtiers. The third The Passions: A Study of Human Nature (2017), which introduced the drama of the passions and the emotions. The fourth and final volume, The Moral Powers: A Study of Human Nature (2020), turns to the moral powers and the will, to good and evil, to pleasure and happiness, to what gives meaning to our lives, and the place of death in our lives. This tetralogy constitutes a Summa Anthropologica in as much as it presents a systematic categorical overview of our thought and talk of human nature, ranging from substance, power, and causation to good and evil and the meaning of life. A sine qua non of any philosophical investigation, according to Grice, is a synopsis of the relevant logico-linguistic grammar. It is surely unreasonable that each generation should have to amass afresh these grammatical norms of conceptual exclusion, implication, compatibility, and contextual presupposition, as well as tense and person anomalies and asymmetries. So via the tetralogy I have attempted to provide a compendium of usage of the pertinent categories in philosophical anthropology to assist others in their travels through these landscapes.” See also List of important publications in anthropology Antihumanism (opposite) Ernst Tugendhat (2007) Anthropologie statt Metaphysik Introduction to Kant's Anthropology Martin Buber Philosophical Anthropology Info – names, books Notes References Bibliography Blasquez, N, El concepto del substantia segun san Agustin, "Augustinus" 14 (1969), pp. 305–350; 15 (1970), pp. 369–383; 16 (1971), pp. 69–79. Cassirer, Ernst (1944) An Essay on Man Couturier Charles SJ, (1954) La structure métaphysique de l'homme d'après saint Augustin, in: Augustinus Magister, Congrès International Augustinien. Communications, Paris, vol. 1, pp. 543–550 Donceel, Joseph F., Philosophical Anthropology, New York: Sheed&Ward 1967. Gilson, Étienne, (1955) History of Christian Philosophy in the Middle Ages, (2nd ed., reprinted 1985), London: Sheed &