What follows (part dialogue, part monologue, mostly rumination) is a series of letters I wrote to my two children, Chris(topher) Russell and Alex(andra) Sophia, over the course of 24 years. The first letter is one I wrote to my son on his day of birth: November 25, 1991; the last is one I wrote to my daughter leading up to her twenty-first birthday on June 8, 2015. Some letters are missing from this publication: they're either lost to other computers, other hard drives, other floppy discs-or are still in storage in the Bronx. I may or may not be able to recover them ever again. What, then, is-and was, from its genesis-the rationale for these letters? Quite simply, a desire to recall, as accurately as possible, the physical, moral and cognitive development of my two children year by year, and blow by blow, as they grew from infancy to toddlerhood, and from childhood to adolescence. But why? So that if they ever needed to, they could one day look back and understand a large part of what made (and makes) them who they are as adults in all of their scintillating functionality or dysfunctionality. This publication may or may not prove to be a worthy addition-or at least a side note-to the ever-raging debate of Nature vs. Nurture. I'm not a psychologist. I'm a writer ... "with a gift or at least a head] for fiction" (David Mamet, State and Main) to boot. And so, I must warn you: caveat lector That said, these letters are the verbal foundation of a truth I aspired to establish early on with my children. What I conveyed often enough orally to my son from the moment he could understand English-namely, "You don't lie to me; I won't lie to you"-was never easy for either of us to embrace. And in some sense, at least, I made my part of the bargain easier by concealing lots of difficult truths until his eighteenth birthday (in 2009), when I suspected he'd be better able to handle those truths in written form. He was. And did. On that basis, and once I'd returned to Brooklyn just short of a month ago, I decided to risk the same with Alex, and consequently gave her all of the letters I'd addressed to her and that I could still access. But why should anyone have any interest whatsoever in an otherwise private correspondence between a father and his children? I can't say that anyone will. That said, no one has ever written a series of letters to his or her children over the course of nineteen years (if one includes those children's day of birth). At least, not that I know of. We all think thoughts; forge memories; bond, then break bonds; grow close, then grow apart. But too much of what occurs to a child gets lost in the shuffle-or worse, gets suppressed, only to raise its arrogant head in some other form(s) in adulthood. The events that first kept us together as a family unit-but then blew us apart-were nothing I could've anticipated in my wildest dreams or nightmares. The strategies my children and I have employed to keep us close over the years are ones the children of estranged parents will hardly consider novel. But the words my two children said (and sometimes wrote in e-mails) to me are some of the kindest, most considerate-and yes, most loving-I've ever heard out of the mouth of any child. In that sense, this collection is a gift to all parents for whom it's not already too late. While not everyone has the free time I've had over the years, not to mention a facility with writing candidly about family matters for future reference. I don't know that such a facility is really all that important; I rather think it's the gesture, the consistency, the promise made and kept. The royalties, should there be any, are entirely theirs-as are the responsibilities that come with publishing a book. I will henceforth let them speak for themselves. As of this Father's Day in 2015-just as on other Father's Days in years past-I couldn't be happier with either of them. But that's a father speaking.