James Mill

A glut, as it is supposed in this doctrine, namely an excess of production in the aggregate, can take place only by a continued increase of production. Let us imagine that we have just come to the supposed point, when, the supply being full, any additional production will be so much of glut. The additional production takes place, and comes to market. What is the consequence? This new product seeks an equivalent. That is to say, it is a new demand. How then is it possible to say that every new supply is a glut, when a new demand is created equal to it? It is obviously nugatory to say, that this new supply may not find purchasers, or the new demand may not find the commodities to which it is directed; for this is only to say that in particular instances there may, from miscalculation, be superabundance or defect. The natural effects, in such a case, may be easily traced, and they afford decisive evidence. The commodities, of which the additional production consists, may be naturally supposed to consist of some of the sorts which are previously in the market. By supposition, the goods previously in the market were accommodated to one another, no species being either in defective, or superabundant supply….

– James Mill, Elements of Political Economy [1821]