. . . in the philosophers' minds, that which is "different," the hated plurality, is immediately associated to error (error is manifold, truth is one) and to evil (crime is a case of non-compliance, a negation of the unitary rule); the "impossible" arises just in the minds of mad people, and uselessness is seen as folly.
__Giovanni Papini, L'altra metà (1911), 2: The Other Half