3. The Commonwealth contended that part from s. 56 of the Judiciary Act, the Commonwealth has immunity from suit in actions in tort or contract; that if it were not for s. 56, no court (including the High Court) has jurisdiction to entertain such an action. It contended that the immunity exists unless removed by statute. For this, it relied on the following: ". . . at common law the Crown was immune" from "liability for tort" (Shaw Savill and Albion Co. Ltd. v. The Commonwealth (1940) [1940] HCA 40; 66 CLR 344, at p 358 , per Dixon J.). "In the middle ages the reason why the King could not be sued in the royal courts was the feudal principle that a lord could not be sued in his own court." (Hogg, Liability of the Crown in Australia, New Zealand and the United Kingdom (1971), p. 3); and "At common law no proceeding, civil or criminal, was maintainable against the Sovereign in person, for it was said that as the courts were her own they could have no jurisdiction over her." (Halsbury's Laws of England 4th ed., vol. 8, p. 613, par. 966). (at p405)