R. Descartes, "The passions of the soul and other late philosophical writings", OUP 2005 (or any other edition);
J. Locke, "An Essay on Human Understanding", ed. by P. Nidditch, Clarendon Press, Oxford 1976, bks 1, 2 and 4.
Further reading:
A. Gehlen, "Man. His nature and Place in the World", Columbia University Press 1988 (or any other edition);
J. de Mul, "Plessner's Philosophical Anthropology. Perspectives and Projects", Amsterdam University Press 2014.
N. Sesardic, "Race: a social destruction of a biological concept", Biology and Philosophy (2010), pp. 143–162.