I'd probably give five stars to any of Mahon's collections, but Life on Earth stands out among his recent ones for reasons which I've tried to explore in more detail in a blog entry. In terms of its technique, it's a book in which one of our very finest craftsmen, rightly praised for his "singing line", pushes his already very wide formal boundaries in a way I find immensely exciting. In terms of vision, this book complements his earlier work by so often seeming informed by an almost opposite spirit. In it, the great poet of pessimism and despair and of affirmations that draw their poignancy and bleak strength from how close to despair they come has found a new lightness and buoyancy, a joy in life, an exuberant willingness to surf its contradictions and a wit that is joyous and playful rather than mordant. There's nothing facile about the predominantly positive mood of many of the poems, though; the darker tones are still there, under the brightness and light, bracing the optimism with intelligence and a sense that it is solidly based on open-eyed awareness. A remarkable work.