This book is about writing in the professional mathematical environment. Krantz addresses these nuts-and-bolts issues: syntax, grammar, structure and style; mathematical exposition; use of the computer and TeX; e-mail etiquette; and all aspects of publishing a journal article. He also outlines how to write grant proposals, letters of recommendation, and book proposals. Readers will find in reading this text that Krantz has produced a quality work which makes evident the power and significance of writing in the mathematical profession.