Complex sentence: He was was also an author of books on arithmetic and algebra for women and published several books on ancient culture, including four volumes called "Dictionnaire d'Antiquité" in 1804, which were illustrated by his wife.
Split into simpler sentences: He was was also an author of books on arithmetic and algebra for women. He also published several books on ancient culture, including four volumes called "Dictionnaire d'Antiquité" in 1804, which were illustrated by his wife.