"Mental Radio" is a book by the outstanding American writer Upton Sinclair. In this philosophical work, the author explores the concept of mysterious and unknown aspects of thinking and consciousness. By sending the reader on a journey into mental realities, Sinclair provokes the study and understanding of the inner world of man. The book "Mental radio" opens the door to an incredible world of thoughts, feelings and perceptions, leaving a mark in the reader's thoughts about the essence of human consciousness and the limitless possibilities of thinking.