If the preface of a book be a plea to the reader, its force must lie in the aims of the author. In the following pages his main aim has been to be of service to somebody. That is a principle, which, amid the ravelment, perplexity, and entanglements of the world, always finds a pathway open. Such a principle is as an All-Seeing Eye, to which he who acknowledges it, is amenable, since it makes plain to him the devious, time-serving byways he should avoid. The writer has no interest, no taste, no trust, save in definite, verifiable ideas. His aim has been to keep clear of the Sin of Pretension, which consists in declaring, or assuming to be true, that which the writer or speaker does not know …
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