 The following are the locations in KGA for some of the less well known pieces referred to in this article (listed in the order in which they were mentioned in the article): Spinozism (KGA I.1, 513–557); Brief Presentation of the Spinozistic System (KGA I.1, 563–582); Idea for a Catechism of Reason for Noble Ladies (KGA, I.2, xxxviii, 153-154); Letters on the Occasion of the Political-Theological Task and the Open Letter of Jewish Householders (KGA I.2, lxxviii–lxxxv, 327–361); Outlines of a Critique of Previous Ethical Theory (KGA I.4, 27–357); Confidential Letters Concerning Friedrich Schlegel’s Lucinde (KGA I.3, xlviii–lxviii, 139–216); 1831 address on Leibniz’s idea of a universal language (KGA I.11, 707–717).