Ethics (book)

Ethics (book)

The Ethics (full title in Latin: Ethica, ordine geometrico demonstrata, or, in English, Ethics, Demonstrated in Geometrical Order) is a philosophical treatise, written by Baruch Spinoza. Spinoza's friends published it after his death, in 1677. The main message of the book is that everything is a part of nature. It is one of the most influential and debated works in philosophy.

The method of the book is mostly geometrical. Definitions and axioms are stated, and propositions and corollaries are derived from these. Prefaces, teachings and appendices, written in more traditional prose, break up the Euclidean rigor.