Father Haugoult roughly intervened, inquiring as to the cause of the fight. Our enemies had interrupted us in writing our impositions, and the class-master came to protect his slaves. The foe, in self-defence, betrayed the existence of the manuscript. The dreadful Haugoult insisted on our giving up the box; if we should resist, he would have it broken open. Lambert gave him the key; the master took out the papers, glanced through them, and said, as he confiscated them: "And it is for such rubbish as this that you neglect your lessons!" Large tears fell from Lambert's eyes, wrung from him as much by a sense of his offended moral superiority as by the gratuitous insult and betrayal that he had suffered. We gave the accusers a glance of stern reproach: had they not delivered us over to the common enemy? If the common law of school entitled them to thrash us, did it not require them to keep silence as to our misdeeds? In a moment they were no doubt ashamed of their baseness. Father Haugoult probably sold the _Treatise on the Will_ to a local grocer, unconscious of the scientific treasure, of which the germs thus fell into unworthy hands. Six months later I left the school, and I do not know whether Lambert ever recommenced his labors. Our parting threw him into a mood of the darkest melancholy. It was in memory of the disaster that befell Louis' book that, in the tale which comes first in these _Etudes_, I adopted the title invented by Lambert for a work of fiction, and gave the name of a woman who was dear to him to a girl characterized by her self-devotion; but this is not all I have borrowed from him: his character and occupations were of great value to me in writing that book, and the subject arose from some reminiscences of our youthful meditations. This present volume is intended as a modest monument, a broken column, to commemorate the life of the man who bequeathed to me all he had to leave--his thoughts. In that boyish effort Lambert had enshrined the ideas of a man. Ten years later, when I met some learned men who were devoting serious attention to the phenomena that had struck us and that Lambert had so marvelously analyzed, I understood the value of his work, then already forgotten as childish. I at once spent several months in recalling the principal theories discovered by my poor schoolmate. Having collected my reminiscences, I can boldly state that, by 1812, he had proved, divined, and set forth in his Treatise several important facts of which, as he had declared, evidence was certain to come sooner or later. His philosophical speculations ought undoubtedly to gain him recognition as one of the great thinkers who have appeared at wide