Improvements may be suggested by any one, but the professor only acquires a knowledge of effects before they are produced, and a facility in producing them by various methods, expedients, and resources, the result of study, observation, and experience. He knows what can, and what can not be accomplished within certain limits. He ought to know what to adopt, and what to reject; he must endeavour to accommodate his plans to the wishes of the person who consults him,* although, in some cases, they may not strictly accord with his own taste. *[Thus before a house is planned, the proprietor must describe the kind of house he wishes to build. The architect is to consider what must be had, and what may be dispensed with. He ought to keep his plan as scrupulously within the expense proposed, as within the limits of the ground he is to build upon: he is, in short, to enter into the views, the wishes, and the ideas of the gentleman who will inhabit the house proposed.]
