I should imagine, that the influence of reason in producing our passions is nothing near so extensive as it is commonly believed.

there is no circumstance, in all the contradictions of our most mysterious nature, that appears to be more humiliating than the use we are disposed to make of those sad examples which seem purposely marked for our correction and improvement.

[t]he science of constructing a commonwealth, or renovating it, or refining it, is, like every other experimental science, not to be taught a priori. Nor is it a short experience that can instruct us in that practical science, because the real effects of moral causes are not always immediate; but that which in the first instance is prejudicial may be excellent in its remoter operation, and its excellence may arise even from the ill effects it produces in the beginning.