Science, truth and dictatorship: Wishful thinking or wishful speaking?

This paper argues for a novel way of addressing questions about the relationship between politics and science: in terms of norms of communication, rather than norms of cognition. The first half of the paper motivates this general shift through close study of the concept of "wishful speaking"; arguing that this vice - rather than the more familiar "wishful thinking" - better captures real-life cases, such as the Lysenko affair. The second half builds on the ethics of communication to develop an account of the proper role of non-epistemic values in justification in terms of "value-aptness".