From time to time, however, he gave evidences of his progress in culture by some production intended for wider circulation. A specimen of such occasional writing is his _Enchiridion militis christiani_, a title which has almost invariably been rendered, "A Handbook of the Christian Soldier," but which bears equally well the meaning, "The Christian Soldier's Dagger." The essential point is that it was a something "handy," a _vade mecum_ for the average gentleman who aimed to be a good Christian. Erasmus uses the word in both meanings at different times. Writing, according to his own reckoning, nearly thirty years afterwards,[54] Erasmus gives us an account of the origin of this treatise, which is interesting as showing how unsystematic were the motives which led, or which he imagined led, to the writing of many of his most famous works. He says "the thing was born of chance." He was at Tournehens to escape the plague then raging in Paris and there came into relations with a friend of Battus, a gentleman who was "his own worst enemy," a gay and reckless liver. This gentleman's wife was a woman of singular piety and in great distress for her husband's soul. She begged Erasmus to write something which might move him to repentance, but to be careful that this warning should not appear to come from her; for "he was cruel to her even to blows, after the manner of soldiers." So Erasmus noted down a few things and showed them to his friends, who approved them so highly that some time afterward at Louvain he employed his leisure in putting them into shape. For a while the book attracted little attention; but later it became one of the most popular and widely read of its author's more serious works. It was first printed in 1503 and after that ran through edition after edition with great rapidity. Naturally, it brought out also no little opposition; but that will explain itself when we have examined a little more carefully the aim and contents of the book. [54] _Catalogus lucubrationum_, i.