While writing the first version in America I was handicapped by an almost complete lack of data in regard to family history, and, consequently, by the impossibility of checking my memory when I felt it might be at fault. My father’s biography has been amplified now, and revised. Numerous other revisions and additions have been made, especially in the earlier chapters. Certain tight parentheses have been opened and allowed to spill their still active contents. Or else an object, which had been a mere dummy chosen at random and of no factual significance in the account of an important event, kept bothering me every time I reread that passage in the course of correcting the proofs of various editions, until finally I made a great effort, and the arbitrary spectacles (which Mnemosyne must have needed more than anybody else) were metamorphosed into a clearly recalled oystershell-shaped cigarette case, gleaming in the wet grass at the foot of an aspen on the Chemin du Pendu, where I found on that June day in 1907 a hawkmoth rarely met with so far west, and where a quarter of a century earlier, my father had netted a Peacock butterfly very scarce in our northern woodlands.
In the summer of 1953, at a ranch near Portal, Arizona, at a rented house in Ashland, Oregon, and at various motels in the West and Midwest, I managed, between butterfly-hunting and writing
Among the anomalies of a memory, whose possessor and victim should never have tried to become an autobiographer, the worst is the inclination to equate in retrospect my age with that of the century. This has led to a series of remarkably consistent chronological blunders in the first version of this book. I was born in April 1899, and naturally, during the first third of, say, 1903, was roughly three years old; but in August of that year, the sharp “3” revealed to me (as described in “Perfect Past”) should refer to the century’s age, not to mine, which was “4” and as square and resilient as a rubber pillow. Similarly, in the early summer of 1906—the summer I began to collect butterflies—I was seven and not six as stated initially in the catastrophic second paragraph of Chapter 6. Mnemosyne, one must admit, has shown herself to be a very careless girl.
All dates are given in the New Style: we lagged twelve days behind the rest of the civilized world in the nineteenth century, and thirteen in the beginning of the twentieth. By the Old Style I was born on April 10, at daybreak, in the last year of the last century, and that was (if I could have been whisked across the border at once) April 22 in, say, Germany; but since all my birthdays were celebrated, with diminishing pomp, in the twentieth century, everybody, including myself, upon being shifted by revolution and expatriation from the Julian calendar to the Gregorian, used to add thirteen, instead of twelve days to the 10th of April. The error is serious. What is to be done? I find “April 23” under “birth date” in my most recent passport, which is also the birth date of Shakespeare, my nephew Vladimir Sikorski, Shirley Temple and Hazel Brown (who, moreover, shares my passport). This, then, is the problem. Calculatory ineptitude prevents me from trying to solve it.