Star Trek: The Next Generation1987

Lt. Commander Data:
Since her death, I have been asked several times to define how well I knew Lieutenant Aster. And I heard you ask Wesley on the bridge how well he knew Jeremy. Does the question of familiarity have some bearing on death?

Commander William T. Riker:
Do you remember how we all felt when Tasha died?

Lt. Commander Data:
I do not sense the same feelings of absence that I associate with Lieutenant Yar. Although I cannot say precisely why.

Commander William T. Riker:
Just human nature, Data.

Lt. Commander Data:
Human nature, sir?

Commander William T. Riker:
We feel a loss more intensely when it's a friend.

Lt. Commander Data:
Hm... But should not the feelings run just as deep, regardless of who has died?

Commander William T. Riker:
Maybe they should, Data. Maybe if we felt any loss as keenly as we felt the death of one close to us - human history would be a lot less bloody.