"Letters to a Friend, Written by Mrs. Ezra Kerr, 1866-1879" is a collection of letters from the famous naturalist and environmentalist John Muir to his longtime friend Mrs. Ezra Kerr. In these letters, Muir shares his life, his thoughts about nature, travels, and the people he met along the way. They reveal not only the majesty of nature, which fascinated Muir, but also his inner world, his philosophy and attitude to life. Each letter in this collection reveals to us a piece of the soul of an outstanding naturalist, his feelings, emotions and dreams. This book is not only a source of knowledge about nature, but also a valuable document of the history of science and culture. It helps the reader better understand the relationship between man and nature, and feel the beauty and majesty of the surrounding world through the eyes of an outstanding researcher and thinker."