3. It is not safe nor rational to resolve to stick to our old imbibed opinions, nor wilfully to reject those that seem new, except we be fully satisfied, from indubitable grounds, that what we account old is certainly true, and what we reckon to be new is undoubtedly false. And this will appear to be a truth, partly from the weakness of their arguments, that seem utterly to condemn all recession from ancient opinions, as vain, foolish, and unnecessary; as also from other positive reasons. 1. Some give the reason why they will not recede from an opinion that their Predecessors held; for that their Forefathers were as wise, if not wiser than they. But this, if strictly considered, is very lame and defective; for their Predecessors were but men, and so were liable both to active and passive deception, and were not exempted from the common frailty of Mankind, who are all subject to errours. And therefore, unless they were assured that their Ancestors in former Ages, held the certain and undoubted grounds of truth, it is nothing of reason in them, but meer perversness of will, rather obstinately _errare cum patribus_, than to learn to follow the truth with those that are coetaneous with them, which is foolish and irrational. Further, there are more helps now, and means to attain the knowledge of Verity, than were in the days when their Ancestors lived, and it must be a kind of the greatest madness to shut their eyes, that the light of truth may not appear unto them. 2. This kind of reasoning hath no more of reason in it, than if one should say, that because his Grandfather and great Grandfather were blind or lame, therefore they will be so too: or that their Ancestors never learned the Greek or Latine Tongues, nor to write or read, neither will they learn any more than they did: or that their Predecessors were ill husbands and unthrifts, and that therefore they will continue the same courses: or that because their Forefathers followed drunkenness and luxury, therefore they will continue the same cariere of vices, as many of our debauched persons do now adays, having no better reasons to alledge for their exorbitant and vicious courses, but what the Prophet condemned, _The fathers have eaten sowr grapes, and the childrens teeth are set on edge_. 3. How far would they run back to state the beginning of their Ancestors? If as far as their first Originals, then they must all be Savages, Barbarians, and Heathens. And if they state it distant from their first Originals, then their Predecessors had the same reason to have continued, as those did that preceded them. But if their Ancestors varied from, and left the steps and opinions of those that went before them, then if they will do as their Ancestors did, they must leave their courses and opinions, as they had done of those that preceded them. [Sidenote: _August. lib. de Liber. Arbitrio._]