The book "The New Speaker and Writer of the Century: A Standard Work on Composition and Oratory" by Henry Davenport Northrop is an important source of knowledge on improving speaking and writing. In this book, readers will find valuable advice on the construction of texts, rhetoric, public speaking, and the correct use of language. The author examines in detail the technique of conducting public speeches, gives examples of effective speeches in history and teaches the art of persuasive communication. This book will help readers develop their communication skills and become confident speakers and writers.