formation of codification commissions in both England and the United States, and went so far as to write to President James Madison in 1811 to volunteer to write a complete legal code for the young country. After he learned more about American law and realised that most of it was state-based, he promptly wrote to the governors of every single state with the same offer. During his lifetime, Bentham's codification efforts were completely unsuccessful. Even today, they have been completely rejected by almost every common law jurisdiction, including England. However, his writings on the subject laid the foundation for the moderately successful codification work of David Dudley Field II in the United States a generation later. Animal rights Bentham is widely regarded as one of the earliest proponents of animal rights. He argued and believed that the ability to suffer, not the ability to reason, should be the benchmark, or what he called the "insuperable line". If reason alone were the criterion by which we judge who ought to have rights, human infants and adults with certain forms of disability might fall short, too. In 1780, alluding to the limited degree of legal protection afforded to slaves in the French West Indies by the Code Noir, he wrote:Earlier in the paragraph, Bentham makes clear that he accepted that animals could be killed for food, or in defence of human life, provided that the animal was not made to suffer unnecessarily. Bentham did not object to medical experiments on animals, providing that the experiments had in mind a particular goal of benefit to humanity, and had a reasonable chance of achieving that goal. He wrote that otherwise he had a "decided and insuperable objection" to causing pain to animals, in part because of the harmful effects such practices might have on human beings. In a letter to the editor of the Morning Chronicle in March 1825, he wrote: Gender and sexuality Bentham said that it was the placing of women in a legally inferior position that made him choose in 1759, at the age of eleven, the career of a reformist, though American critic John Neal claimed to have convinced him to take up women's rights issues during their association between 1825 and 1827. Bentham spoke for a complete equality between the sexes, arguing in favour of women's suffrage, a woman's right to obtain a divorce, and a woman's right to