Abstract
Michael Polanyi articulates two arguments against the view that moral judgment has no proper place in the conduct of political science: Non-judgmental political science cannot understand what it studies; and non-judgmental political science cannot understand the political scientist himself. Evaluation of these arguments not only clarifies important dimensions of Polanyi's conceptions of understanding and tacit inference, it prompts a reconsideration of the nature of both moral deliberation and moral truth. The encounter with Polanyi demonstrates that non-judgmental political science does indeed fall short of its stated objective.