The Beauty, an incandescent new collection from one of  American poetry’s most distinctive and essential voices, opens with a series of dappled, ranging “My” poems—“My Skeleton,” “My Corkboard,” “My Species,” “My Weather”—using materials sometimes familiar, sometimes unexpected, to explore the magnitude, singularity, and permeability of our shared existence. With a pen faithful to the actual yet dipped at times in the ink of the surreal, Hirshfield considers the inner and outer worlds we live in yet are not confined by; reflecting on advice given her long ago—to avoid the word “or”—she concludes, “Now I too am sixty. / There was no other life.” Hirshfield’s lines cut, as always, directly to the heart of human experience. Her robust affirmation of choice even amid inevitability, her tender consciousness of the unjudging beauty of what exists, her abiding contemplation of our moral, societal, and biological intertwinings, sustain poems that tune and retune the keys of a life. For this poet, “Zero Plus Anything Is a World.” Hirshfield’s riddling recipes for that world (“add salt to hunger”; “add time to trees”) offer a profoundly altered understanding of our lives’ losses and additions, and of the small and larger beauties we so often miss.