Jonathan Bennett, the Spinoza expert says of this edition that, "it improves on all of its predecessors, and is thoroughly usable for low pressure study of the work; but for serious scholarly or philosophical research the version in E.M Curley's "The Collected Works of Spinoza", vol.1 (Princeton U. press, 1985) is indispensable (and I might add very expensive). That edition is however less fluent and pleasing than this one, but is the standard of accuracy - a real mirroring of the Latin in English - to which this edition does not aspire". This edition is not only pleasing and fluent, but is also a very carefully considered translation. There are detailed notes on the translation decisions taken and a very useful glossary of terms. That this edition also includes the "Emendation of the Intellect", Spinoza's treatise on ways of acquiring knowledge and also the essential letters necessary to understand Spinoza's meaning on various issues considered in "The Ethics" are very important additions. The version by Elwes, and the edition by White and Shirley are both highly defective and should not be used. This edition is therefore highly recommended and the one of choice for most general uses.