Yet his handling of Sir William is tolerably unflinching, when he settles to the work; and he will carry the sympathy of most readers in his criticisms, whatever they may think of his own peculiar views. The students of his Logic were rather daunted, years ago, on discovering that a mind so able was content to found upon mere experience its conviction that two and two make four, and to assume, by implication at least, that on some other planet two and two may make five. He still holds to this attitude. But so perfect are his candor and clearness, that no dissent from his views can seriously impair the value of his writings; and though no amount of clearness can make such a book otherwise than abstruse to the general reader, yet there are some chapters which can be read with pleasure and profit by any intelligent person,--as, for instance, the closing essay on mathematical study. This must not, however, be taken for an indorsement of all which that chapter contains; for it must be pronounced a little inconsistent in Mr. Mill to criticize Hamilton for underrating mathematics without having studied them, when this seems to be precisely his critic's attitude towards the later German metaphysics. He speaks with some slight respect of Kant, to be sure, but complains of the speculations of his successors as "a deplorable waste of time and power," though he gives no hint or citation to indicate that he has read one original sentence of Fichte, Schelling, or Hegel. Indeed, he heaps contempt in Latin superlatives upon the last-named thinker, and then completes the insult by quoting him at second-hand through Mansel, (I. 61,)--that Mansel some of whose doctrines he elsewhere proclaims to be "the most morally pernicious now current." (I. 115.) He afterwards makes it a sort of complaint against Hamilton, that he had read "every fifth-rate German transcendentalist"; but if this was so, surely a competent critic of Hamilton should have followed him at least through the first-rates. This unfairness,--if, indeed, these surmises be correct,--although it seems very much like the Englishman whom our current prejudices represent, seems very unlike John Stuart Mill. As the ablest work that modern British philosophy has produced, this book will doubtless have many American readers, and well deserves them. _Speeches of Andrew Johnson, President of the United States._ With a Biographical Introduction, by FRANK MOORE. Boston: Little, Brown, & Co.