ling conclusions, and these he set before the public in his Political Justice, the first book he published under his own name. It appeared in 1793, and immediately created a great sensation. It must be ranked as one of the principal factors in the development o£ English thought. A short explanation of the doctrines embodied in it will throw important light on his subsequent relations to Mary, as well as on his own character. The foundation of the arguments he advances in this book is his belief in the efficacy of reason in the individual as a guide to conduct. He thought that, if each human being were free to act as he chose, he would be sure to act for the best; for, according to him, instincts do not exist. He makes no allowance for the influence of the past in forming the present, ignoring the laws of heredity. A man's nature is formed by the character of his surroundings. Virtue and vice are the result not of innate tendencies, but of external circumstances. When these are perfected, evil will necessarily disappear from the world. He had so successfully subordinated his own emotions, that in his philosophical system he calmly ignores passion as a mainspring of human activity. This is exemplified by the rule he lays down for the regulation of a man's conduct to his fellow-beings. He must always measure their respective worth, and not the strength of his affection for them, even if the individuals concerned be his near relations. Supposing, for example, he had to choose between saving the life of a Fénelon and that of a chambermaid, he must select the former because of his superior talents, even though the latter should be his mother or his wife. Affections are to be forgotten in the calculations of reason. Godwin's
