The crowd that filled the auditorium at the Museum of Modern Art earlier this month twinkled with eccentric glasses and necklaces. Most hair was gray or graying; viewing audience members’ heads from an auditorium perch was a little like gazing down at a cloud from an airplane window. Their color suited the occasion: we had gathered to celebrate the life of Dorothea Tanning, a surrealist poet and painter who turned 101 over the summer. Best known for her early surrealist paintings, which hang in