The name of Limborch, one of the friends whom Locke made in Holland, has already been mentioned. A long series of letters which passed between them, beginning with Locke's arrival at Cleve in September, 1685, and ending only a few weeks before his death, is still extant, though some are still unpublished. This correspondence is interesting, not only as throwing light on Locke's pursuits, but also as affording a free expression of his theological opinions. Thus, in a letter written to Limborch soon after his arrival at Cleve, with reference to a work recently published by Le Clerc, he acknowledges his perplexities respecting the plenary inspiration of the Bible. "If all things which are contained in the sacred books are equally to be regarded as inspired, without any distinctions, then we give philosophers a great handle for doubting of our faith and sincerity. If, on the contrary, some things are to be regarded as purely human, how shall we establish the divine authority of the Scriptures, without which the Christian religion will fall to the ground? What shall be our criterion? Where shall we draw the line?" He applies to Limborch for help. "For many things which occur in the canonical books, long before I read this treatise, have made me anxious and doubtful, and I shall be most grateful if you could remove my scruples." From the character of his theological writings, composed during the latter years of his life, it would appear that these scruples were afterwards either removed or set aside.