It is within the competence of any member to address a question to any minister of the crown who is also a member, to obtain information. Except in special cases, notice of questions must be given at least one day in advance, and a period of approximately three-quarters of an hour is set apart at four sittings every week for the asking and answering of such questions. A minister may answer or decline to answer, but unless a declination can be shown to arise from legitimate considerations of public interest its effect politically may be embarrassing. In any event, there is no debate, and in this respect the English practice differs from the French "interpellation."[186] The asking of questions is liable to abuse but, as is pointed out by Ilbert, "there is no more valuable safeguard against maladministration, no more effective method of bringing the searchlight of criticism to bear on the action or inaction of the executive government and its subordinates. A minister has to be constantly asking himself, not merely whether his proceedings and the proceedings of those for whom he is responsible are legally or technically defensible, but what kind of answer he can give if questioned about them in the House, and how that answer will be received."[187] Any member is privileged to bring forward a motion censuring the Government or any member or department thereof, and a motion of this sort, when emanating from the leader of the Opposition, constitutes a vote of confidence upon whose result may depend the continued tenure of the ministry. By a call upon the Government or a given department for information, by the constitution of parliamentary committees, departmental committees, or royal commissions, and, in particular by taking advantage of the numberless opportunities afforded by the enactment of appropriation bills, the House of Commons may further impose upon the executive the most thoroughgoing responsibility and control. "A strong executive (p. 130) government, tempered and controlled by constant, vigilant, and representative criticism," is the ideal at which the parliamentary institutions of Great Britain are aimed.[188] [Footnote 186: See p. 314.] [Footnote 187: Parliament, 113-114.] [Footnote 188: Ilbert, Parliament, 119. On the Commons' control of the Government see Lowell, Government of England, I., Chap. 17; Moran, English Government, Chap. 8; Low, The Governance of England, Chap. 5; Todd, Parliamentary Government, II., 164-185.]