… is from pages 52-53 of James Buchanan’s 1991 collection, The Economics and the Ethics of Constitutional Order; specifically, it’s from Jim’s 1989 article (co-authored with Viktor Vanberg) “Interests and Theories in Constitutional Choice”:
How a person chooses among potential alternatives is not only a matter of “what he wants” but also of “what he believes,” and for some kinds of choices an actor’s beliefs or theories may play a most crucial role.
