Answer:
John Stuart Mill
Explanation:
This is an excerpt that was extracted from John Stuart Mill's "Utilitarianism" where he was trying to define and explain what utilitarianism means.
John Stuart Mill is widely known as a philosopher who originated from England, and he is popular for his works in areas such as classical liberalism, social theory, political theory, and political economy.
He is also known to belong to the Utilitarianism school of thought.