4 Psychiatric Aspects of Neurological Disease, D. Frank Benson and Dietrich Blumer, Grune and Straton, N.Y. 1975. Mathematics —The Music of Reason, Jean Dieudonne, Springer-Verlag, N.Y. 1991 Mathematics for the Liberal Arts, F. Richman, C.L. Walker, R.J. Wisner and J.W Brewer, Simon and Schuster, N.Y. 1998 Th