Smith was an advocate of animal rights and denounced animal experiments as immoral. He was an
opponent of vivisection and described it as "the most cruel injustice towards the animal". The stewardship of animals therefore entails responsibility for humans since they have deprived animals of their freedom and this makes it vital that animals are treated well. Smith believed that animals could be eaten for food but not exploited beyond basic needs. In 1791, Smith authored a book on the nature of animals and human duties towards them. The purpose was to bring "alleviation to the brute creation which is groaning under its sufferings". Smith was influenced by a 1711 work by
Adam Gottlieb Weigen, another early animal rights writer. A monument in his honour is located at Holmen Church cemetery in Copenhagen. ==Selected publications==