"Letters to a Friend" is a collection of letters from the outstanding German scientist and statesman Wilhelm von Humboldt. In these letters, the author shares his own thoughts about philosophy, literature, science, and life in general. With great erudition and deep understanding of affairs, Humboldt discusses the important issues of his time, and also provides advice on making sense of the world. This book invites the reader to a dialogue with the author, in which every word is filled with wisdom and reflections on the deeper aspects of life. "Letters to a girlfriend" is an important work that will help everyone to think more deeply about their thoughts and views.