  In 1690, Norris issued criticisms of Locke's An Essay concerning Human Understanding¸ the first edition of which was published in December 1689. Norris' review, entitled Cursory Reflections upon a Book called An Essay concerning Human Understanding, prompted Locke to modify the second edition of the Essay at 2.10.2. Otherwise, Locke did not reply publicly to Norris' criticisms. It was only after Locke and Norris quarreled that Locke published his estimation of Norris' works. Lady Masham had entrusted a letter for Locke to Norris, but news reached Locke that Norris had opened the letter. Locke suspected Norris in spite of his protests, and from that time forward, which was the end of 1692, they were not on friendly terms (Cranston 1957, 364–365). Shortly thereafter (1693), Locke wrote Remarks upon some of Mr. Norris' Books, Wherein he asserts P. Malebranche's Opinion of seeing all Things in God and  Examination of Malebranche. Charlotte Johnston has argued that the impetus and target for Locke's critical evaluation of Malebranche's thought was Norris, whom he viewed as reiterating Malebranche's thought (1958). In the Cursory Reflections, Norris stated that he would soon publish a treatise, in which he would present his own philosophy at length.