This introduction presents an overview of key concepts discussed in the subsequent chapters of this book. The pronunciation of foreign words has often been adjusted by English speakers but their origins frequently remain visible and are decipherable from their written forms. Rich diversity and cross-cultural influences have had lasting effects on English, especially on its spelling. They help to explain the root cause for many of the spelling irregularities of the language today. The study of the origin and evolution of English is enlightening and particularly effective for spellers because it helps to provide logical explanations for some spelling anomalies and enigmas. The Elizabethan age produced many great poets and dramatists, many of whom revelled in the expansion of vocabulary. William Shakespeare is admired and revered for his contribution to English literature. Professor Bernard Lamb, a geneticist and London branch Chairman of the Queen's English Society, stated that the Qualifications and Curriculum Authority (QCA) had no business imposing US spellings.