[151] Perhaps it is a piece of folly to make a long speech upon matters which are so manifest, as to which there is no individual and no city that is ignorant, that they are not only every day, but even every hour, as one may say, supplying a visible proof of the truth of my assertion. Is the love of money, or of women, or of glory, or of any one of the other efficient causes of pleasure, the origin of slight and ordinary evils?