John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 136-137
John Austin was a noted English legal theorist, who influenced British and American law with his analytical approach to jurisprudence and his theory of legal positivism. In opposing traditional approaches of "natural law", Austin argued against any necessity for connections between law and morality. Human legal systems, he claimed, can and should be studied in an empirical, value-free way. Wikipedia

John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 136-137
John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 6
John Austin (legal philosopher)
Variant:
The existence of law is one thing; its merit or demerit is another. Whether it be or be not is one enquiry; whether it be or be not conformable to an assumed standard, is a different enquiry. A law, which actually exists, is a law, though we happen to dislike it, or though it vary from the text, by which we regulate our approbation and disapprobation.
John Austin, Austin Lectures on Jurisprudence; or The Philosophy of Positive Law, 1873, Lecture V
Source: The Province of Jurisprudence Determined (1832), p. 278
John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 6
John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 1; opening line
John Austin (legal philosopher)
Source: The Province of Jurisprudence Determined (1832), p. 224