Unfortunately this quote misses a fourth type - textbook writing. This forms the views of those that subsequently go on to become scientists and is also the area of most debate when it comes to ignorant peasants wanting a God to blame for their crops failing and the rest of us wanting to understand how the world actually works.
Pete
God is our guide! from field, from wave, From plough, from anvil, and from loom; We come, our country's rights to save, And speak a tyrant faction's doom: We raise the watch-word liberty; We will, we will,we will be free!