text: A repeated line in this book tells of how children play on the seashore because "they know not how to cast nets."
full_question: A repeated line in this book tells of how children play on the seashore because "they know not how to cast nets." A section of this poetry collection predicts that "these verses will not lie in little well-printed books upon ladies' tables". This collection of poems opens with the line "Thou hast made me endless, such is thy pleasure", and includes a poem about a land "where the world has not been broken up into fragments" and "the mind is without fear". This poetry collection had an introduction written for it by W.B. Yeats. For 10 points, name this collection of poems written by Rabindranath Tagore. 
first_sentence: A repeated line in this book tells of how children play on the seashore because "they know not how to cast nets."
raw_answer: Gitanjali [or Offering of Songs; or Song Offerings]  