Ahn Sang Hyun first started writing to comfort himself. His works gradually spread to people around him, and later touched the hearts of hundreds of thousands of others. This made him believe in the power of sentences. In the last six years, Ahn has written essays to be happy whenever he has hard times and for those who might feel the same; the essays have received much love from readers. He hopes that the wholehearted sentences in this book can always give support and comfort to someone who feels alone in life.