The 90-year-old Italian abstract painter Giorgio Griffa works with diluted acrylics on unstretched, unprimed canvas. The works are pinned to the wall for display and folded away for storage, their creases telling a quiet story of time. Griffa stops painting before a work is finished because, he has said, “in the meantime, life has moved on.” He calls his various bodies of work “different pathways through the same dark forest”—the forest being a symbol for the unknown, a place for wandering rather than escape. The Clark Art Institute is currently presenting Griffa’s first solo museum exhibition in North America. —Elena Clavarino