For this last half year I have been troubled with the disease (as I may call it) of translation. The cold prose fits of it, which are always the most tedious with me, were spent in the History of the League;[47] the hot, which succeeded them, in this volume of Verse Miscellanies. The truth is, I fancied to myself a kind of ease in the change of the paroxysm; never suspecting but that the humour would have wasted itself in two or three pastorals of Theocritus, and as many odes of Horace. But finding, or at least thinking I found, something that was more pleasing in them than my ordinary productions, I encouraged myself to renew my old acquaintance with Lucretius and Virgil; and immediately fixed upon some parts of them, which had most affected me in the reading. These were my natural impulses for the undertaking. But there was an accidental motive which was full as forcible, and God forgive him who was the occasion of it. It was my Lord Roscommon's "Essay on Translated Verse;"[48] which made me uneasy till I tried whether or no I was capable of following his rules, and of reducing the speculation into practice. For, many a fair precept in poetry is, like a seeming demonstration in the mathematics, very specious in the diagram, but failing in the mechanic operation. I think I have generally observed his instructions; I am sure my reason is sufficiently convinced both of their truth and usefulness; which, in other words, is to confess no less a vanity, than to pretend that I have, at least in some places, made examples to his rules. Yet, withal, I must acknowledge, that I have many times exceeded my commission; for I have both added and omitted, and even sometimes very boldly made such expositions of my author's, as no Dutch commentator will forgive me. Perhaps, in such particular passages, I have thought that I discovered some beauty yet undiscovered by those pedants, which none but a poet could have found. Where I have taken away some of their expressions, and cut them shorter, it may possibly be on this consideration, that what was beautiful in the Greek or Latin, would not appear so shining in the English: and where I have enlarged them, I desire the false critics would not always think, that those thoughts are wholly mine, but that either they are secretly in the poet, or may be fairly deduced from him; or at least, if both those considerations should fail, that my own is of a piece with his, and that if he were living, and an Englishman, they are such as he would probably have written.