Data: "Captain, you have seemed unusually pensive since we received the news of Ambassador Sarek's death." Picard:

Data: "Captain, you have seemed unusually pensive since we received
the news of Ambassador Sarek's death." Picard: "Sarek and I shared
a particular bond. Our lives touched in an unusual way. I admit
I feel the effects of his death. The tenure of this mission has
changed, Mister Data, at least it has for me. We were sent to confront
Spock about his disappeance, and now I also have to tell him that
his father is dead."
-- "Unification I", Stardate 45240.6

Related:

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• Picard: "Sarek, we are a part of each other. I know that he has caused you pain.
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• Picard: "I also have the responsibility of being the bearer of unhappy news." Spock:
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• Spock: "I know of your mind meld with my father, which enabled him to complete his last mission." Picard:
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• Spock: "It is possible that I have brought my argument with Sarek to you,
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• Picard: "Sarek! I've come a long way to see you." Sarek:
  "I will not answer!" Picard: "I must talk to you about...
• Data: "Considering the exceptionally long lifespan of Vulcans,
  it does seem odd that Sarek and Spock did not choose...
• Picard: "I have come on an urgent mission from the Federation.
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• Picard: "But your fight with Sarek is over, Spock. You have none with me." Spock:
  "I always had a different vision than my father. The...