Roget was born in England of French parentage and made the development of an English Language Thesaurus his life's work. He gained little recognition in his own lifetime but the results of his endeavours have been diligently embellished and supplemented by generations of academics so that now, when we need another word for the one in our mind, when we are seeking a word but it won't come to mind, when we want to put together that "catch phrase" that will bring our customers running to our door, we reach instinctively for Roget's Thesaurus. They're even a standard part of the kit for most Word Processing programs.
Organized both by subject matter and alphabetically, my Thesaurus is a pleasure to dive into. If I have one problem with it, it's that, having found the word I want, I keep reaing for the pure joy of the language. It's my firm belief that Roget has help keep the English language a rich, multi-cultural language that is understood worldwide.