Pulitzer Prize winner, WS Merwin, died on Friday aged 91, The Guardian reported. 

He died in his sleep at his home on the Hawaiian island of Maui, according to publisher Copper Canyon Press and the Merwin Conservancy, which the poet founded.

Laureate of the most prestigious American award, William Merwin wrote over 20 books, which included works created under the influence of myths and legends, poems on the theme of the Vietnam War, as well as later works, which are poetic reflections on age and time.

“He is an artist with a very clear spiritual profile, and intellectual and moral consistency, which encompasses both his work and his life,” his fellow poet Edward Hirsch once said of him.