It might be stated that Mill employed a combination of formal and informal tone in "On liberty..", by developing some complex ideas, meanings and expressions. The author used metaphors and figurative languages to appeal to the audience. It might be added that Mill wrote those who agreed with him and he discussed his thesis by attacking the conservatives.
He used frases such as <span> "no one's idea," "no one should assert," "it would be absurd," "nobody denies" . </span>
The best choice is option one, although that is not fully correct. But because an author is present, the name comes first.
My Gran is my hero. She is brilliant and loves to read. She also gets bored easily. As a young girl, she struggled a great deal. Because of this she ran away at the age of 21 and moved to the west coast. When she got there she chose to educate herself. She chose studies over security, as well as living in poverty. She ended up getting a job teaching at a university. She ended up marrying and having a beautiful family. Because she never stopped learning, she died with a burning curiosity about her life.
All of these could be considered an "author's purpose". An author is technically anyone who writes anything, therefore the purpose of writing is theoretically limitless. If you have to choose one of these, however, it would be "to remind".
"All men are created / born equal" is probably the best quote because it implies equality and all men are seen as the same in the eyes of God. This "condemns" slavery because it suggests there is no superiority/inferiority to others.