Imagine a world without the Lorax, the Grinch, the delicacy of green eggs and ham and the word “nerd.” To be deprived of the imagination of children’s book trailblazer Dr. Seuss, born Theodor Seuss Geisel, would leave readers without the timeless tales and iconic characters that remain embedded in our collective psyche more than 80 years after the first Dr. Seuss book was published.

But who’s the man behind the crafty couplets? Brian Jay Jones comprehensively answers that question in a nearly 500-page biography. Credit either Geisel’s amusing personality or Jones’s breezy writing, but “Becoming Dr. Seuss” never feels like a slog; rather, pages fly by, acquainting readers with Geisel’s work ethic, frequent pranks and core belief that children’s books should never be condescending or overly simplistic.

Born in Springfield, Mass., to German parents, Geisel read voraciously in his youth, claiming he read Jonathan Swift and Charles Dickens at 6 years old. Later though, his childhood was marred by anti-German sentiment during World War I, and in that era of xenophobia he would sometimes flee from high school with coals bouncing off his head. His fury at this kind of hate would form the backbone of his story “The Sneetches.”

At Dartmouth College, Geisel found his footing penning cartoons for the college’s satire magazine Jacko, and his art was used in everything from house ads to column filler. He knew he had talent, Jones writes, but he also needed to make a living post-college. Geisel brought his artistic skills to advertising, most notably for Standard Oil and the bug spray Flit. In this section, we’re treated to Jones’s impressive details of how certain ad illustrations featured several creatures resembling the distinct characters any Dr. Seuss fan would recognize.

Moving to San Diego, Geisel pivoted to children’s books partly for financial reasons, but also because of a long-held frustration: “Dick and Jane” books talked down to kids and never challenged them, Geisel complained more than once. It was time to entertain and educate young readers, he thought, while wrapping the stories in playful language and invented words. (Geisel coined the term “nerd” in 1950 in his book “If I Ran the Zoo.”)

The more compelling portions of the book focus on Geisel’s tense relationship with his publisher Random House, whose editors appointed the author the president of their new Beginner Books imprint. Geisel not only had issue with the “word list” — the 200 or so unique words authors were limited to using — but also publication choices. His arguments with Random House brass over which books to launch were particularly telling, showing how passionate Geisel had become about advancing children’s literature.

What will undoubtedly satisfy Seussian scholars and casual readers alike is a portrait of his work schedule, which Jones chronicles as being so rigid his first wife Helen often had to pull the author out of his basement and into dinner parties where he would reluctantly socialize over cocktails. Don’t think children’s books are any easier to write than adult prose, Jones stresses. Geisel could spend days perfecting a single rhyme, lest it shine duller than the other gems surrounding it.

Pranks and jokes invigorated Geisel when he was bored; he once slathered paint onto a canvas and convinced an art-loving friend it was the work of a “great Mexican modernist.” The man paid $500 for the slapdash work, but Helen convinced Geisel to return the collector’s money.

When Jones turns to the amusing origin stories behind “The Cat in the Hat” and “How the Grinch Stole Christmas,” the book picks up in pace and intrigue. The section on Geisel’s idea for “The Lorax” could be the most relevant today. Jones writes that Geisel came up with “The Lorax” as a response to watching condo development envelop San Diego’s pristine coastlines. “It’s one of the few things I set out to do that was straight propaganda,” Geisel says of his environmentally friendly anti-greed book.

Jones also addresses a few problematic pages found in Dr. Seuss’s earlier work: Geisel has been criticized for using the derogatory term “Chinaman” in “And to Think That I Saw It on Mulberry Street,” and 50 years after the book’s publication Geisel admitted such a phrase was in poor taste. His statement, though, wouldn’t nullify the controversy of a 2017 “Mulberry Street” mural at the Dr. Seuss museum in Springfield.

Profiling cultural empires and their instigators is familiar territory for Jones, who also wrote “Jim Henson: The Biography” and “George Lucas: A Life.” It’s clear that Jones is experienced in extracting details from the most innocuous letter or interview, fleshing out the lives of cultural groundbreakers we’ve long admired. As all successful biographers should do, Jones doesn’t cheerlead his own writing style by adding unnecessary flourishes or similes; he lets the subject’s actions and quotes energize the book. Thankfully, Geisel is a hilarious and insightful character whose love of literature is almost as infectious as his timeless rhymes.

David Silverberg is a Toronto-based freelance journalist and book critic who writes for BBC News, Vice, Ars Technica and NOW Magazine. Find him @SilverbergDave on Twitter.

Becoming Dr. Seuss

Theodor Geisel and the Making of an American Imagination

By Brian Jay Jones

Dutton. 496 pp. $32