 No philosophical topic occupied Bayle more than toleration. Many of the articles of his Dictionnaire deal with it, and most of the rest of his other works are directed either largely or entirely to the topic, most notably, his Commentaire philosophique. It is an area in which he clearly had a profound impact on the Enlightenment. Locke also might have found in Bayle, if not a source for his own views, then at least moral support for them, which he himself might have provided for Bayle. In any case, their views are very similar, even to the point of excluding Catholics from the provisions of toleration (although their theories provide little on behalf of this exclusion and much against it).