'A journal to be good, true, and interesting, should be written without the slightest reference to publication, but without any fear of it: it should be the transcript of a mind that can bear transcribing. I always contemplate the possibility that hereafter my journal will be read, and I regard with alarm and dislike the notion of its containing matters about myself which nobody will care to know' (January 2nd, 1838). These notes were designed chiefly to preserve a record of the less known causes and details of public events which came under the Author's observation, and they are interspersed with the conversations of many of the eminent men with whom he associated. But it must be borne in mind that they are essentially what they profess to be--a _contemporary_ record of facts and opinions, not altered or made up to square with subsequent experience. Hence some facts may be inaccurately stated, because they are given in the shape they assumed at the time they were recorded, and some opinions and judgments on men and things are at variance (as he himself acknowledges and points out) with those at which the writer afterwards arrived on the same persons and subjects. Our impressions of what is passing around us vary so rapidly and so continually, that a contemporary record of opinion, honestly preserved, differs very widely from the final and mature judgment of history: yet the judgment of history must be based upon contemporary evidence. It was remarked by an acute observer to Mr. Greville himself, that the _nuances_ in political society are so delicate and numerous, the details so nice and varying, that unless caught at the moment they escape, and it is impossible to collect them again. That is the charm and the merit of genuine contemporary records.