The last chapters are more theological in character, arguing that the attributes of God must be sufficient for the extent of his operations, and that God must be good because designs seen in nature are beneficial.
Viimased, teoloogilisemad peatükid väidavad, et Jumala atribuudid peavad olema tema toimingute ulatuse jaoks piisavad ning Jumal peab olema hea, sest looduses nähtavad konstruktsioonid on heategevad.