Mistress or Wife? Three professors are discussing whether it's better to have a wife or a mistress. The French professor insists it's better to have a mistress: ""It's more exciting; your life is always passionate, full of romance!"" The Philosophy professor disagrees: ""No, it's much better to have a wife. Your love grows deep, you live with your best friend, and there are few unpleasant surprises."" The Math professor listens to them for a while, then says, ""Actually, if you ask me, it's best to have both."" The other two gape at him in surprise. ""*Both!?*"" ""Well, of course!"" he continues. ""That way, when your mistress thinks you're with your wife, and your wife thinks you're with your mistress, you can do mathematics.""