Art Garfunkel on His Unusual New Book, the End of Simon and Garfunkel

The singer explains how he wrote 'What Is It All But Luminous' and why he doesn't expect to sing with Paul Simon ever again Art Garfunkel breaks down his new book 'What Is It All But Luminous,' and explains why he won't tell what caused his latest rift with Paul Simon. In the spring of 1983, Art Garfunkel stepped out of his New York apartment building and began a walk across North America.