The British writer and cultural critic Olivia Laing, author of the “The Garden Against Time: In Search of a Common Paradise” and the forthcoming novel “The Silver Book,” discusses the symbiotic relationship between gardening and writing; the act of rebelling against a reactive, adrenaline-fueled culture by prioritizing and embracing slowness, in-person conversation, and what they call the “temporal self”; and the importance of imagining, in vivid detail, the kinds of utopias we could one day very well live in.