Petrarch observes, that we change language, habits, laws, customs, manners, but not vices, not diseases, not the symptoms of folly and madness?they are still the same. And as a river, we see, keeps the like name and place, but not water, and yet ever runs, our times and persons alter, vices are the same, and ever be. Look how nightingales sang of old, cocks crowed, kine lowed, sheep bleated, sparrows chirped, dogs barked, so they do still: we keep our madness still, play the fool still; we are of the same humours and inclinations as our predecessors were; you shall find us all alike, much as one, we and our sons, and so shall our posterity continue to the last.
Burton