The Wealth of Nations by Part 2 Chapter 2 Page 84

knowledge or deliberate consent, but for some time, perhaps, without their having the most distant suspicion that they had really advanced it.

When two people, who are continually drawing and redrawing upon one another, discount their bills always with the same banker, he must immediately discover what they are about, and see clearly that they are trading, not with any capital of their own, but with the capital which he advances to them.

But this discovery is not altogether so easy when they discount their bills sometimes with one banker, and sometimes with another, and when the same two persons do not constantly draw and redraw upon one another, but occasionally run the round of a great circle of projectors, who find it for their interest to assist one another in this method of raising