Ulysses by James Joyce is one of the greatest masterpieces of modernist literature. Brilliant and sparkling, this book is a stunning portrait of internal psychological processes. The novel is as difficult to summarize as it is difficult to read, but it has a remarkably simple story. This is the story of one day in Dublin, Ireland (June 16, 1904) in the life, primarily, of Leopold Bloom, but including Stephen Dedalus and Molly Bloom, as well as a host of other characters. 
Intoxicating, powerful, often incredibly disconcerting, Ulysses is a tour de force by a truly great writer. In all this is a very clever book, that is erudite, full of humour and intelligence and is certainly worth reading.