(_b_) In considering a construction of this character we have, then, first to ask ourselves not merely what are the circumstances under which it was erected, but what is its aim and purpose. To make its construction compatible with such considerations, to have a due regard for climate, position, and the environing landscape, to create a whole, one in spontaneous co-ordination, by a regard for all these aspects as subservient to one purpose, this is the task stated broadly, in the entire fulfilment of which the instincts and genius of the artist will appear conspicuous. Among the Greeks we find that it is public buildings, temples, colonnades, and halls utilized for the ordinary rest and commerce of the day, approaches, such as the famous ascent of the Acropolis in Athens, which are pre-eminently the objects of the builder's art. Private residences, on the other hand, were of a very simple character. With the Romans, on the contrary, it is the luxurious character of private houses, especially villas, which becomes prominent; and we may say the same thing of imperial palaces, public baths, theatres, circuses, amphitheatres, aqueducts, and springs. Buildings of this type, however, the utility of which throughout remains the commanding and directing principle, are merely able to accept beauty in a more or less decorative sense. The object most compatible with freedom of treatment in this sphere is that of religion--the temple-house as the enclosure of an individual which itself is appropriated by fine art, and placed before us by sculpture as the statue of the god. (_c_) In the pursuit of aims such as those above mentioned, then, genuine architecture appears to be more free than the symbolic type of the previous stage, which seizes on the organic forms from Nature, nay, more free than sculpture, which is compelled to accept the human form it finds, and unites itself with them and their general relations as presented it. Classical architecture rather invents its forms and their configuration, so far as the content is concerned, from ends of spiritual import and in respect to form from human reason without any prototype. This greater freedom must, in a relative sense, be admitted; but the province in which it is exercised remains restricted, and the treatment which belongs to the classical art of building, on account of the rationality[79] of its forms is, taken as a whole, somewhat of an abstract and dry character.