This paper essentially restates the argument about history made in my book History and Precedent in Environmental Design. The restatement is extremely brief and concise, a summary of the essence, in order to draw attention to the most important points made in the book. Two principal points are made. First, the important role that history need to play in the development of environment-behaviour studies (EBS) and more specifically in the development of an explanatory theory of environment-behaviour relations (EBR). Second, given this particular role of history there are implications for the kind of history that is needed.