The Simpsons Season 6 Episode 12

Homer: I always wondered if there was a god. And now I know there is. And it's me.
Marge: You're not a god, Homer.
Lisa: Remember Dad, all glory is fleeting.
Homer: So?
Lisa: Beware the Ides of March.
Homer: No.
Lisa: Dad I know you think you're happy now, but it's not gonna last forever!
Homer: Everything lasts forever.
Lisa: Don't you see, getting what you want all the time will ultimately leave you unfulfilled and joyless.
Homer: Remove the girl!
Lisa: Dad you're not with your Stonecutters now. There are no lackies to carry out your every--
(Bart appears, puts his hand over her mouth, salutes Homer, and then drags her away)