Collins explains what Revivalism, Rationalism, Eclecticism, and Functionalism meant to those who practised them, examining the impact that social forces and the other arts and sciences had on architectural styles while recognizing the tectonic continuities that underlie the seeming ruptures between pre-modern, modern, and post-modern approaches to design. His work is infused with a deep sympathy for the classical spirit of the eighteenth century and he argued rigorously and passionately that Enlightenment ideas could be of real value to the architects of his generation, particularly since technology had made it possible to use them effectively. Collins's plea for sensitivity to tradition and the urban fabric while encouraging technological innovation and unprecedented programs makes his thought just as vital today as it was ahead of its time when first published. Collins had long wished to see an affordable, fully illustrated edition of his book and McGill-Queen's University Press and the McGill School of Architecture are proud to at long last fulfil this wish. The new edition includes a biographical sketch of Collins, a brief publication history of the work, and an introductory essay by Kenneth Frampton that discusses the importance of the work at the time it was first published and highlights its relevance for the architectural problems of today. Like the classic works of Hitchcock, Giedion, Pevsner, and Benevolo, Changing Ideals in Modern Architecture is essential reading and forms a striking contrast with other works on modernism, such as Reyner Banham's. It will be pertinent to all those interested in architectural history and theory, modern history, history of ideas, and aesthetics.

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"Even now, after so much of its substance has been elaborated by subsequent scholarship, Changing Ideals in Modern Architecture remains a pioneering achievement. It still provides an ideological history of the modern movement, covering an extremely wide trajectory and one which is animated throughout by a sharp critical bias. Its challenging originality stems from the way in which Collins constantly begs the question as to the fundamental nature of tectonic modernity as this has evolved over the last two centuries." Kenneth Frampton, from the Introduction