The book contains travel diaries, articles and letters of the great Russian traveler, humanist scientist Nikolai Nikolaevich Miklouho-Maclay. The central place is occupied by his stories about his stay on the Maclay Coast, about relationships with the Papuans, about the triumph of friendship, humanity, and mutual understanding. The book reveals the moral character of the Russian democratic scientist and his life principles, and presents a difficult, dramatic life path.