There is a radical distinction between controlling the business of government and actually doing it. The same person or body may be able to control every thing, but can not possibly do every thing; and in many cases its control over every thing will be more perfect the less it personally attempts to do. The commander of an army could not direct its movements effectually if he himself fought in the ranks or led an assault. It is the same with bodies of men. Some things can not be done except by bodies; other things can not be well done by them. It is one question, therefore, what a popular assembly should control, another what it should itself do. It should, as we have already seen, control all the operations of government. But, in order to determine through what channel this general control may most expediently be exercised, and what portion of the business of government the representative assembly should hold in its own hands, it is necessary to consider what kinds of business a numerous body is competent to perform properly. That alone which it can do well it ought to take personally upon itself. With regard to the rest, its proper province is not to do it, but to take means for having it well done by others. For example, the duty which is considered as belonging more peculiarly than any other to an assembly representative of the people is that of voting the taxes. Nevertheless, in no country does the representative body undertake, by itself or its delegated officers, to prepare the estimates. Though the supplies can only be voted by the House of Commons, and though the sanction of the House is also required for the appropriation of the revenues to the different items of the public expenditure, it is the maxim and the uniform practice of the Constitution that money can be granted only on the proposition of the crown. It has, no doubt, been felt that moderation as to the amount, and care and judgment in the detail of its application, can only be expected when the executive government, through whose hands it is to pass, is made responsible for the plans and calculations on which the disbursements are grounded. Parliament, accordingly, is not expected, nor even permitted, to originate directly either taxation or expenditure. All it is asked for is its consent, and the sole power it possesses is that of refusal.