"Truth be told, the grunge era never quite fit Sonic Youth ... Beginning with Washing Machine, Sonic Youth returned to more adventurous territory, and in 1997, they released a series of EPs that illustrated their bond with such post-rock groups as Tortoise and Gastr del Sol. Those EPs, as well as the epic Washing Machine closer, "The Diamond Sea," provide the foundation for A Thousand Leaves, the band's most challenging and satisfying record in years ... It may be their most cerebral album in ages, but that only makes it all the more engaging".