Complex sentence: His book, "Opticorum Libri Sex philosophis juxta ac mathematicis utiles" (Six Books of Optics, useful for philosophers and mathematicians alike), published by Balthasar I Moretus in Antwerp in 1613, was illustrated by the famous painter Peter Paul Rubens.
Split into simpler sentences: His book, "Opticorum Libri Sex philosophis juxta ac mathematicis utiles," or "Six Books of Optics," is useful for philosophers and mathematicians. It was published by Balthasar I Moretus in Antwerp in 1613 and illustrated by the famous painter Peter Paul Rubens.