PREFACE. The following essay was written several years ago; but I have hitherto refrained from publishing it, lest, after having done so, I should find that more mature thought had modified the conclusions which the essay sets forth. Judging, however, that it is now more than ever improbable that I shall myself be able to detect any errors in my reasoning, I feel that it is time to present the latter... more...

I Leibniz was above all things a metaphysician. That does not mean that his head was in the clouds, or that the particular sciences lacked interest for him. Not at all—he felt a lively concern for theological debate, he was a mathematician of the first rank, he made original contributions to physics, he gave a realistic attention to moral psychology. But he was incapable of looking at the objects of... more...