Benedict de Spinoza's "Ethics, Part 3" is a classic work read by book lovers, students and scholars. This is a special edition which exposes readers to a variety of English phrases and terminology from this genre. While the text is in English, the "click and translate" thesaurus, in Portuguese, is a perfect tool for Portuguese speakers who need to enjoy this English-language classic, and also learn English words. If you are a non-English speaker, you can use this version to help you improve your vocabulary in preparation of English-language tests. While designed for Portuguese speakers wishing to learn English, English-speakers wanting to pick up Portuguese vocabulary may also find the Portuguese thesaurus feature of interest (the text is entirely in English, only the pop-up thesaurus is in Portuguese).