Fifteen Thousand Useful Phrases is a practical handbook written by Grenville Kleiser. Grenville is known for his writings on humor, positive thinking and inspirational thought. This serves as a handbook of pertinent expressions, striking similes and terms for embellishing speech and literature. This book can be used to improve vocabulary for reading, writing and speaking alike. Through mastery of words, the most powerful and perfect expression of thought can be delivered orally. Choosing the correct words conveys ideas in a crisp and clear way that will hold and audience's attention. Language can also act as an instrument to reach the human heart and awaken the soul.