It was a lonely road but, as Atlas portrays it, one that suited a nature that ego and family circumstances had made solitary in the extreme. Born in 1915 near Montreal to Russian immigrant parents who had seen their upper-middle-class life in St. Petersburg fall apart, Bellow was beset from an early age by a violent, tyrannical father and two money-hungry brothers who belittled his artistic aspirations. When he was 8 years old a severe bout of pneumonia kept him confined by himself to a ward in a Montreal hospital. "The void created by this long separation from his family remained with him all his life," writes Atlas. It was "the primary life experience that defined him ... It showed him there was no one to count on." "I never belonged to my own family," Bellow later said. "I was always the one apart."

Through a rough-and-tumble upbringing in grimy 1920s and '30s Chicago, where his family had moved in 1924, Bellow charted his own aloof course and continued doing so into adulthood, where he had few lasting friends and personal relationships. The story of Bellow's adulthood is one of a continuing series of academic appointments (at Bard College, the universities of Minnesota and Chicago and most recently Boston University), marriages to increasingly younger women, affectionate but inattentive relationships with his children and multiple adulteries. Atlas chronicles it all with a mixture of distaste for the failed family man (he must have soon tired of writing variations on the phrase "and the old pattern repeated itself") and admiration for the disciplined writer.

Of course, for a writer, the more uncomfortable his experience, the more ready material he has. Bellow is the undisputed master of 20th century catch-and-release fiction, wherein personal relationships are swiftly unhooked and tossed into that vaguely parallel stream of the written oeuvre. The result has been a body of work heavily weighted with neo-romans à clef. These can yield fascinating figures like the Allan Bloom-inspired title character in this year's "Ravelstein," the fervent Moses Herzog or Von Humboldt Fleisher, the Delmore Schwartz-like poet of "Humboldt's Gift." It can also memorialize the tedious, as in the case of the cranky, heavily academic worlds of "Mr. Sammler's Planet" and "The Dean's December."

It took only a decade and a half for Bellow to go from literary boychik to cranky old man. The middle of 1964, when "Herzog" was riding high on the bestseller lists, was probably the author's professional apex. In a few years, as the country plunged into the unrest of the late '60s, Bellow would become the literary poster boy for neoconservatism. Political, cultural and sexual crankiness has been a Bellow hallmark for the past three decades, most famously in his dismissive comments on multiculturalism: "Who is the Tolstoy of the Zulus? The Proust of the Papuans? I'd be glad to read him."

In Bellow, Atlas found a subject whose life straddles the two career patterns of the 20th century American writer. Before 1950, most struggling novelists paid the bills with work on newspapers, magazines and trade journals while writing books in their off time. The latter half of the century has seen the numbers of papers and magazines dwindle, and new MFA and creative writing programs spring up to provide the day jobs. Bellow was in the first wave of this trend. A chronicle of the jumps from one visiting professorship to another may not provide much excitement, and it certainly means we're in for some real snoozer bios when the lives of today's academic scribblers come up for recording; but Bellow's story is enlivened as few are by the rich trove of his letters -- perhaps the last great body of literary correspondence by an American writer -- that fills in the interstices of his patterned life with his rich inner musings.

"I had no idea our time would be so brief," Bellow laments about the 30-year rise and eclipse of his crowd of intellectuals who had rendered the Jewish American experience. Today, at 85, with a new novel and a new baby daughter, he can certainly be said to have made the record in his own way. And the freewheeling narrative voice he brought to literature has influenced many other writers. Bellow's star, unlike those of all his contemporaries except the slightly younger Roth, has declined but not fallen. The ultimate value of this biography is in the lucid view it gives of the ascension and subsidence of a worldview -- one that, in Bellow's case, has left a body of work with many admirers and few friends.

Maya Angelou reads from "The Heart of a Woman"