Answer:
Stated by John S. Miller in Utilitarianism.
Step-by-step explanation:
The given quote was stated by John Stuart Mill in his book "Utilitarianism".
According to this quotation, Mill is trying to say that it is better to gain knowledge and be unhappy than being satisfied, happy and ignorant.
He is comparing wise men with Socrates and foolish with Pig.
In his book, Utilitarianism, Mill has defended the Utilitarianism. He has explained that why Utilitarianism is best in ethics.