His 1945 MA thesis for Rudolf Wittkower at the Warburg Institute, London, was a theoretical speculation that Inigo Jones may have intended to publish a theoretical treatise on architecture, analogous to Palladio's "Four Books of Architecture". Although this idea was not supported by any hard evidence and could not ever be proven, encouraged by Wittkower it established Rowe's way of speculating and imagining what "might" have happened: an approach to the history of architecture that was largely imaginary and factually questionable, but which he gradually built into a vastly erudite, coherently argued way of thinking and seeing that exasperated conventional historians, but became the inspiration for a generation of practising architects to consider history imaginatively, as an active component in their design process.