Happiness, The Delight-Tree: An Anthology of Contemporary International Poetry is presented in honour of the International Day of Happiness. Representing 56 countries and five world regions, the poems are in English, with original-language versions in 30 different languages, including the 6 official languages of the United Nations. This anthology is presented on World Poetry Day.

The anthology is dedicated to Sri Chinmoy, whose poem The Roots of Delight -Tree, is the source of the book's title. A painting by Sri Chinmoy is also featured on the book's cover.