Final answer:
The quote is by Elizabeth Bennet from Jane Austen's 'Pride and Prejudice,' distinguishing between vanity and regulated pride associated with true superiority of mind.
Step-by-step explanation:
The quote "Yes, vanity is a weakness indeed. But pride-- where there is a real superiority of mind, pride will always be under good regulation." is attributed to Elizabeth Bennet, a character in Jane Austen's novel Pride and Prejudice. This statement reflects on the nuances between vanity and pride, suggesting that while vanity is inherently a flaw, pride, when coupled with true superiority of mind, can be kept in check and be seen as a positive attribute. Pride in this context is not about arrogance or excessive self-esteem, but rather a justified self-respect that comes with recognition of one's true abilities and accomplishments.