I can't stand a naked light bulb, any more than I can a rude remark or a vulgar action.
This line clearly sets up the key theme of illusion vs reality. Blanche takes the naked truth - the stark bare lightbulb, the rude remark - and dresses it up prettily to make everyone happier and everything easier. That she speaks of talk and action as analogous to a lightbulb shows that she considers the remedy for uncouth behavior and appearance to be a paper lantern, an external cover, rather than a change from within.
And then the searchlight which had been turned on the world was turned off again and never for one moment since has there been any light that's stronger than this--kitchen--candle.
Blanche is telling Mitch the sad details of her marriage to Allan. She loved him truly, despite her disgust at his homosexuality, and something broke inside her when he died. She ties this loss to the theme of light. Blanche hides from bright lights because they expose the truth, but she also avoids them because there is no longer any light inside her to match.
Deliberate cruelty is not forgivable. It is the one unforgivable thing in my opinion and it is the one thing of which I have never, never been guilty.
Blanche may be deluded about a lot of things, but she is lucid and strong on this point. She lies and cheats and steals, but never to hurt anyone. She wishes only to preserve an illusion. And a fundamental component of her illusion is that she must believe the best of anyone she loves, and believe them incapable of cruelty. She is, unfortunately, unable to make this dream a reality.
And then the searchlight which had been turned on the world was turned off again and never for one moment since has there been any light that's stronger than this--kitchen--candle.
Blanche is telling Mitch the sad details of her marriage to Allan. She loved him truly, despite her disgust at his homosexuality, and something broke inside her when he