Preface
This book will seem to some a mere medley. Is it a text-book of Logic, a pious exhortation, or a treatise on Mythology? Why cannot the author choose some plan and stick to it?
For this reason (among others): Part of the very object of the work is to call attention to the fact that our life is being disorganized by the monotony of our methods of teaching. To escape this monotony, we are driven to seek the needful variety in multiplicity of subjects of study and in conflict of opinion. Variety we must have; but we could get it more safely by alternation of attitude and variety of treatment.
The most important truths are those which no one disputes; but they are now too much forgotten, precisely because, not being disputed, and being monotonously taught, they are found uninteresting. In old days these truths were impressed on the mind by giving variety to the manner of their exhibition.
An eminent Logician says of his own work: "I am proud of having written a book on Logic, in which it is proved, among other things, that the Logic of the heart has its own validity." I should be proud if I could convince a single teacher that the isolation of any mode of thought is misleading; and that no system of Logic can be valid unless it is able to focus together various rays of Truth.
The substance of this Volume appeared in Articles in the Inquirer, Journal of Education, Jewish Chronicle and Jewish World of London, the Occident of Chicago, and the American Israelite of Cincinnati.
My best thanks are due to the owners of the long-lost Wedgwood MSS. (recovered in 1882), for confiding them for a time to me. These MSS. would not, it is thought, appeal to a sufficiently wide circle of readers to make the publication of them desirable; but they supply the missing link between the Pulsation-Logic of Gratry and Boole, and the most advanced medical psychology of our time.
