id author title date pages extension mime words sentences flesch summary cache txt www-iep-utm-edu-6876 Kant, Immanuel: Metaphysics | Internet Encyclopedia of Philosophy .html text/html 11061 650 60 The reason that knowledge has these constraints, Kant argues, is that the mind plays an active role in constituting the features of experience and limiting the mind's access only to the empirical realm of space and time. Kant thought that Berkeley and Hume identified at least part of the mind's a priori contribution to experience with the list of claims that they said were unsubstantiated on empirical grounds: "Every event must have a cause," "There are mind-independent objects that persist over time," and "Identical subjects persist over time." The empiricist project must be incomplete since these claims are necessarily presupposed in our judgments, a point Berkeley and Hume failed to see. The empiricist might object at this point by insisting that such concepts do arise from experience, raising questions about Kant's claim that the mind brings an a priori conceptual structure to the world. ./cache/www-iep-utm-edu-6876.html ./txt/www-iep-utm-edu-6876.txt