Prisoner at the bar, you have been convicted before me of what the law regards as a very grave and serious offence, that of going through the marriage ceremony a second time while your wife was still alive... You plead in mitigation of your conduct that she was given to dissipation and drunkenness, that she proved herself a curse to your household while she remained mistress of it, and that she had latterly deserted you; but I am not permitted to recognise any such plea... The law in its wisdom points out a means by which you might rid yourself from further association with a woman who had dishonoured you; but you did not think proper to adopt it. I will tell you what that process is. You ought first to have brought an action against your wife's seducer if you could discover him; that might have cost you money, and you say you are a poor working man, but that is not the fault of the law. You would then be obliged to prove by evidence your wife's criminalty in a court of justice, and thus obtain a verdict with damages against the defendant, who was not unlikely to turn out to be a pauper. But so jealous is the law of the sanctity of the marriage tie, that in accomplishing all this you would only have fulfilled the lighter portion of your duty. You must then have gone, with your verdict in your hand, and petitioned the House of Lords for a divorce, it would cost you perhaps five or six hundred pounds, and you do not seem to be worth as many pence. But it is the boast of the law that it is impartial, and makes no difference between the rich and the poor. The wealthiest man in the kingdom would have had to pay no less than that sum for the same luxury; so that you would have no reason to complain. You would, of course, have to prove your case over again, and at the end of a year, or possibly two, you might obtain a decree which would enable you legally to do what you have thought proper to do without it. You have thus wilfully rejected the boon the legislature offered you, and it is my duty to pass upon you such sentence as I think your offence deserves, and that sentence is, that you be imprisoned for one day; and inasmuch as the present assizes is three days old, the result is that you will be immediately discharged.
Maule was knighted and appointed a Baron of the Court of the Exchequer in 1839, transferring to the Court of Common Pleas later that year. He was a practical and knowledgeable judge with a fine judicial sense of humour. Maule was the only judge to dissent on the ruling in M'Naghten's Case, which laid down the legal definition of insanity. Maule retired from the bench because of poor health in 1855 but became a Privy Councillor. Maule never married, sharing a house with his widowed sister, Emma Maria Leathley, and unmarried niece, Emma Leathley. He died at home in London.