Gustav Cassel

"If my theoretical studies have contained any subjective value judgment, then this has amounted at most to a preference for freedom and progress rather than state control of the economy and distribution of such scanty prosperity as may be available for distribution at a given moment. I have wanted to make it clear that this preference is a great common interest of all parties, both in the management of the world economy and in every individual nation. Such a position may be attacked, but it cannot be denominated as party-politics in the ordinary sense."

"Economics is in high degree a pedagogical discipline, and an economist must be in close touch with popular psychology in order to know what ought to be said at any particular moment."

"The further away a scholarly opinion is from direct observation and the more abstract and ‘theoretical’ it is, the more defenseless it becomes against insidious opportunist errors of judgment. In economics, model thinking in particular creates scope for systematic biases... But of course all social studies must nevertheless aim at generalization. It is thus important to be able to think concretely at the same time, as I learnt from Gustav Cassel."