Reversible World addresses threats to our planet and its ecosystem. It is a courageous, Whitmanesque, passionate book that urgently concerns itself with time, hope, climate change, science, mythology, and history. Its dazzling use of metaphor surpasses that of other contemporary poets. It has an aura of being concerned with something bigger than we can grasp. The love poems are its shining stars, but in a sense, they are all love poems.