That won't work today. Drawing a line on a page and quoting Ben Franklin, or committing 27 textbook closes to memory aren't going to make it any more. Now closing is about relationships, ambiance, atmosphere, presentation and product suitability - not to mention whether the purchase is seen to be a good deal. If they like you they are more likely to buy from you. If they don't like you they won't buy unless they are desperate.
People buy on feelings more than on logic.
But if they only buy on feelings, logic soon makes them regret their decision. Either that, or their neighbor, family member, or friend will. Selling is a transfer of emotion. You should be excited about the products you sell, but the above rules will always override. They sell clubs on emotion.