Star Trek: The Original Series, Season 3

Kirk:
Why was it so impossible to tell us [Garth and Kirk] apart?

Spock:
It was not impossible, Captain. Our presence here is proof of that.

Kirk:
Yes, and... congratulations. What took you so long?

Spock:
The interval of uncertainly was actually fairly brief, Captain. It only seemed long to you. I was waiting for a victor in the hand-to-hand struggle, which I assumed would be Captain Garth. [Hastily explains] Because of your depleted condition. Failing a resolution to the struggle, I was forced to use other means to make my determination.

Kirk:
I see. Mr. Spock, letting yourself be hit on the head—and I presume you let yourself be hit on the head—is not exactly a method King Solomon would have approved. [Spock opens his mouth to reply, stops in confusion] Mr. Scott, ready to beam up.

Scotty:
Aye, aye, sir.