The Big Bang Theory, Season 11

[Sheldon has gifted Amy with a notebook.]

Amy:
What is this?

Sheldon:
The notes from our quantum cognition project. I thought we could spend the evening grinding away on it.

Amy:
I just got home. I'm tired.

Sheldon:
Of Howard. I know. So how about you and me make some... beautiful science together?

Amy:
Sheldon, I wanna work on this with you, just not tonight. What if we get up early and do it in the morning? I promise, I'll be way more into it.

Sheldon:
You know what? There was a time when you would have been happy to stay up and collaborate all night with me. And then wake up in the morning and do it some more.

Amy:
[sighs] Fine, but can we make it quick?

Sheldon:
[shocked] No. If you have to make me do all the work, then go to bed. But don't be surprised if you walk out here and catch me doing it myself.