“A letter,” says Marina Tsvetaeva, “is a form of communication from another world, less perfect than a dream, but subject to its same laws. Neither letters nor dreams are commissioned: we dream and write not when we want, but when they want: the letter to be written and the dream to be dreamed.” In this collection of letters, one of the most beautiful that literature has produced, we witness something akin to a miracle: the harmony between three great poets who establish a conversation between equals. Each sees in the other someone very close in spirit. In these pages, the boundaries between letters, essays, and poems blur, and reflections like Pasternak’s on literary creation emerge, along with verses like those in Tsvetaeva’s “New Year’s Letter” or Rilke’s “Elegy.”