Man's vices and his concupiscence (that is, in the strict sense, the desire of lower appetites in a manner that is contrary to reason) and Man's tendency to cho

Man's vices and his concupiscence (that is, in the strict sense, the desire of lower appetites in a manner that is contrary to reason) and Man's tendency to choose against reason in favor of indulging the irrational all but ensure the seesaw of civilization.