The doctrine that "the King can do no wrong" had its beginnings as far back as the infancy of Henry III., and by degrees it grew until it became a cardinal principle of the constitution. Legally it means that he cannot be adjudged guilty of wrong-doing, and hence that no proceedings can be brought against him. He cannot be prosecuted criminally, or, without his own consent, sued civilly in tort or in contract in any court in the land.[27:1] But clearly if the government is to be one of law, if public officers like private citizens are to be subject to the courts, if the people are to be protected from arbitrary power, the servant who acts on behalf of the Crown must be held responsible for illegal conduct from the consequences of which the King himself is free. Hence the principle arose that the King's command is no excuse for a wrongful act, and this is a firmly established maxim of the Common Law in both civil and criminal proceedings.[27:2] To prevent royal violations of the law, however, it is not enough to hold liable a servant who executes unlawful orders, if the master still has power to commit offences directly. A further step must be taken by restraining the Crown from acting without the mediation of a servant who can be made accountable, and for this reason Edward I. was informed that he could not make an arrest in person.[28:1] But, as the kings and queens are not likely to be tempted into personal assaults and trespasses, the principle that they can act only through agents has had little importance from the point of view of their liability at law, although it is a matter of vital consequence in relation to their political responsibility. [Sidenote: or in Politics.]