Romulan Commander quotes from Star Trek: The Original Series

Kirk

Captain. Standing by to beam your survivors aboard our ship. Prepare to abandon your vessel.

No. No, that is not our way. I regret that we meet in this way. You and I are of a kind. In a different reality, I could have called you "friend".

Kirk

What purpose will it serve to die?

We are creatures of duty, Captain. I have lived my life by it. Just one more duty to perform. [activates self-destruct system]

I must admit some surprise on seeing you, Spock. We were not aware of Vulcans aboard the Enterprise.

Spock

Starfleet is not in the habit of informing Romulans of its ships' personnel.

Quite so. Yet there are certain ships, certain officers, that are known to us. Your situation appears most interesting.

Kirk

What earns Spock your special interest?

He is a Vulcan. Our forebears had the same roots and origins. Something you wouldn't understand, Captain. We can appreciate the Vulcans, our distant brothers. I have heard of Vulcan integrity and personal honour. There's a well-known saying, or is it a myth, that Vulcans are incapable of lying?

Spock

It is no myth.

Then tell me truthfully now, by your honour as a Vulcan, what was your mission?

Spock

I reserve the privilege of speaking when it will not violate my honor as a Vulcan.

You realize that very soon we will learn to penetrate the cloaking device you stole.

Spock

Obviously. Military secrets are the most fleeting of all. I hope that you and I exchanged something more permanent.