Lucian Freud, the celebrated figurative artist and grandson of Sigmund Freud, passed away on Wednesday night in his home in London. Freud, 88, died following a short-term illness, according to the artist’s dealer. His paintings challenged traditional portraiture: the role of painter and subject in Freud’s work became known as “interrogator and interrogated,” as art critic John Russell wrote. One of the perks he enjoyed as England's most prominent artist was 24-hour access to London's National Gallery, where he often wandered late at night. “I use the gallery as if it were a doctor," he said in a New York Times profile.