[I recount the story of a shirtless Nabokov catching butterflies in the mountains of Utah in 1943 and responding only slowly to John Downey, a student stopped beside the coal truck he was driving. Downey told Nabokov he too was interested in butterflies, but Nabokov needed proof, quizzing him as butterfly after butterfly flitted by as they walked down the mountain road. Partly thanks to Nabokov, already becoming the world expert in the Blues, Downey would become the world authority on the Blues in the next generation.]What strikes me about Nabokov’s encounter with Downey in Cottonwood Canyon is the demands he makes, the conditions he imposes, on this grimy truck driver: You can walk with me, but I will test you a little. If you pass the test, I will let you see who I am, and I will even offer you all that I have found, so that you can go on to make your discoveries in turn.As much as the chess problem [that Nabokov describes in Speak, Memory], the story suggests Nabokov’s demanding but ultimately generous relationship to his readers, which reflects his sense of the demanding but ultimately generous world that life offers us.That seems to me the key to Nabokov. He was a maximalist: someone who appreciated, as much as anyone has, the riches the world offers, in nature and art, in sensation, emotion, thought, and language, and the surprise of these riches, if we animate them with all our attention and imagination. Yet at the same time he felt that all this was not enough, because he could readily imagine a far ampler freedom beyond the limits within which he feels human consciousness is trapped.He celebrates with unique precision and passion the delights of the visible and tangible world, the tenderness and force of human feelings and relationships, the treasures of memory: the thetic pleasures of life, if you like. He planned to call his first novel Happiness—until he realized that might be just a little too unguarded.Yet Nabokov also has a deserved reputation for his acid imagination, his savage irony, and his trenchant ability to deflate, to register disappointments, humiliations, and horrors. His stories offer endless evidence of the comic, ironic, tragic limitations of human life, and he never lets us forget the absurdity of the very conditions of the human mind: of the solitary confinement of the self, as he defines one central aspect of his work, or of the prison of time, as he defines another. At this level Nabokov registers the “antithetic torments” of life and writes books entitled not Happiness but Laughter in the Dark or Despair.But readers who stop there, and think that he stops there, in modernist irony or a postmodernist abîme, miss altogether his positive irony, his attempt to encompass all the negatives, as he suspects life itself does, and reverse their direction in the mirror of death. The search for that possibility is what makes Nabokov different and what makes him write. He believes that the fullness and the complexity of life suggest worlds within worlds within worlds, and he builds his own imagined universes to match. Although we cannot see his hidden worlds at first, he allows us to find our own way to them, just as he thinks whatever lies behind life invites us to an endless adventure of discovery in and beyond life. At this “synthetic” level, Nabokov writes books with titles like The Gift, whose hero in turn thinks of writing “a practical handbook: How to Be Happy.”Lately literary critics and scholars have tended to avoid a single-author focus, partly because authors have been downgraded as the causes of literary works.That’s a mistake, I think. Nothing like “The Library of Babel,” Lolita, or Waiting for Godot would have been written in the mid-twentieth century or at any other time had Borges, Nabokov, and Beckett not lived—even had history otherwise run the same course. All three were saturated in literature past and present but sought it out and responded to it in unique ways.The best criticism, too, is highly individual but also part of highly social processes, and that’s another thread that runs through these pieces. Criticism is cooperative: we want to understand the same works, and we learn from others both specific information and ways to understand and appreciate. And it is competitive: we want to challenge others whose claims we find wrong, and we want our efforts and results to be recognized.In my work on evolution and literature, the one line of research after Nabokov that I have so far had time to pursue to something near satisfaction, I have explored the interplay of the individual and the social, the collaborative and the competitive, the original insight or the independent effort and the traditions and institutions that make the insight and effort possible and worthwhile.Another thread running through Stalking Nabokov is the range that specialization can entail. Specialists may become too narrow, but Nabokov himself wonderfully evoked for his literature students the magic of discovery that specialization could allow. A research specialization like mine on Nabokov has required language learning, interpretation, annotation, bibliography, translation, forays into many literatures and into history, geography, philosophy, science, and psychology. It has meant the continued excitement of discovery; travels to five continents; meetings with the Nabokov family and writers, publishers, scientists, scholars, and librarians who worked with or after him; dialogues with readers famous and obscure; documentary filming; naming new butterflies; and even a law trial.The best antidote to the confines of one kind specialization can be to follow orthogonal lines of specialization. In Nabokov’s case, literature and Lepidoptera, poetry and prose, versification and boxing. In my case, partly as a comparison and contrast to Nabokov within literature, and, as an alternative delight, Shakespeare; as a contrast to Nabokov’s high-culture status, Dr. Seuss and Art Spiegelman; as a contrast and comparison to Nabokov within twentieth-century thought, the philosopher Karl Popper, with his specializations in the philosophy of science, physics, music, and social philosophy, and his preference for ideas over words; narrative, from Homer and Genesis to the present, across all modes, from epics to comics; and literature and evolution, which has meant exploring across arts and eras and into biology, anthropology, and many fields of psychology. Readers of Stalking Nabokov will see these other specializations from time to time crossing my Nabokov trail and offering glimpses of other vistas.