and one of the hardest works of literature to read.

It inspires such devotion that once a year on a day called Bloomsday,

thousands of people all over the world dress up like the characters,

take to the streets,

and read the book aloud.

And some even make a pilgrimage to Dublin

just to visit the places so vividly depicted in Joyce's opus.

So what is it about this famously difficult novel

that inspires so many people?

There's no one simple answer to that question,

but there are a few remarkable things about the book

that keep people coming back.

The plot, which transpires over the course of a single day,

is a story of three characters:

Stephen Dedalus, reprised from Joyce's earlier novel,

"A Portrait of the Artist as a Young Man";

Leopold Bloom, a half-Jewish advertising canvasser for a Dublin newspaper;

and Bloom's wife Molly, who is about to embark on an affair.

Stephen is depressed because of his mother's recent death.

Meanwhile, Bloom wanders throughout the city.

He goes to a funeral,

his work,

a pub,

and so on,

avoiding going home because Molly is about to begin her affair.

Where it really starts to get interesting, though,

is how the story's told.

Each chapter is written in a different style.

15 is a play,

13 is like a cheesy romance novel,

12 is a story with bizarre, exaggerated interruptions,

11 uses techniques, like onomatopoeia, repetitions, and alliteration

to imitate music,

and 14 reproduces the evolution of English literary prose style,

from its beginnings in Anglo-Saxon right up to the 20th century.

That all culminates in the final chapter

which follows Molly's stream of consciousness

as it spools out in just eight long paragraphs

with almost no punctuation.

The range of styles Joyce uses in "Ulysses"

is one of the things that makes it so difficult,

but it also helps make it enjoyable.

And it's one of the reasons that the book is held up

as one of the key texts of literary modernism,

a movement characterized by overturning traditional modes of writing.

Joyce fills his narrative gymnastic routines

with some of the most imaginative use of language you'll find anywhere.

Take, for instance,

"The figure seated on a large boulder at the foot of a round tower

was that of a broadshouldered deepchested stronglimbed frankeyed redhaired

freelyfreckled shaggybearded widemouthed largenosed longheaded deepvoiced

barekneed brawnyhanded hairlegged ruddyfaced sinewyarmed hero."

Here, Joyce exaggerates the description of a mangy old man in a pub

to make him seem like an improbably gigantesque hero.

It's true that some sections are impenetrably dense at first glance,

but it's up to the reader to let their eyes skim over them

or break out a shovel and dig in.

And once you start excavating the text,

you'll find the book to be an encyclopedic treasure trove.

It's filled with all manner of references and allusions

from medieval philosophy to the symbolism of tattoos,

and from Dante to Dublin slang.

As suggested by the title, some of these allusions revolve around Homer's "Odyssey."

Each chapter is named after a character or episode from the "Odyssey,"

but the literary references are often coy, debatable, sarcastic, or disguised.

For example, Homer's Odysseus, after an epic 20-year-long journey,

returns home to Ithaca and reunites with his faithful wife.

In contrast, Joyce's Bloom wanders around Dublin for a day

and returns home to his unfaithful wife.

It's a very funny book.

It has highbrow intellectual humor,

if you have the patience to track down Joyce's references,

and more lowbrow dirty jokes.

Those, and other sexual references, were too much for some.

In the U.S., the book was put on trial, banned, and censored

before it had even been completed

because it was originally published as a serial novel.

Readers of "Ulysses" aren't just led through a variety of literary styles.

They're also given a rich and shockingly accurate tour

of a specific place at a time:

Dublin in 1904.

Joyce claimed that if Dublin were to be destroyed,

it could be recreated from the pages of this book.

While such a claim is not exactly true,

it does show the great care that Joyce took in precisely representing details,

both large and small, of his home city.

No small feat considering he wrote the entire novel

while living outside of his native Ireland.

It's a testament to Joyce's genius that "Ulysses" is a difficult book.

Some people find it impenetrable without a full book of annotations

to help them understand what Joyce is even talking about.

But there's a lot of joy to be found in reading it,

more than just unpacking allusions and solving puzzles.

And if it's difficult, or frustrating, or funny,

that's because life is all that, and more.

Responding to some criticism of "Ulysses,"

and there was a lot when it was first published,

Joyce said that if "Ulysses" isn't worth reading,

then life isn't worth living.