Jeremy Bentham1748–1832- An Introduction to the Principles of Morals and Legislation (1789; 1823), Ch. 17: Of the Limits of the Penal Branch of Jurisprudence
The question is not Can they reason?, nor Can they talk?, but Can they suffer?
An Introduction to the Principles of Morals and Legislation (1789; 1823), Ch. 17: Of the Limits of the Penal Branch of Jurisprudence





