He said spreading love and compassion is the "only victory" in the world.
In an exclusive interview to PTI, Holtzberg said: "Pakistan must know best what the people are facing. The sorrows of father, brother, wife and children."
Holtzberg and his orphaned grandson 'little' Moshe are on a visit to Mumbai nine years after the deadly attacks by 10 Pakistani terrorists on Chabad House, or Nariman House.
Moshe, then two years old, was saved by his Indian nanny during the attacks, but lost his parents - Gavriel and Rivka.
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The victory, he said, is in spreading the message of "goodness and kindness".
The 69-year-old said India should give a stern message that such acts are not acceptable and should develop people- to-people contact so that citizens on both sides find their "connections".
Holtzberg, his wife Frieda and grandson Moshe visited the Gateway of India, Israeli Consulate and Dhobi Ghat today.
The family arrived from Israel yesterday on a five-day visit to the city and will be meeting Israeli Prime Minister Benjamin Netanyahu tomorrow at the renovated Nariman House.
While Frieda said Moshe was "excited" to be at Nariman House, her husband gave a nuanced view.
Moshe became sad after going to the third floor of the building, a cultural and outreach centre for the Chabad- Lubavitch movement, he said, adding that the kitchen and the room brought back memories of his parents.
"... A couple of minutes after that he became very happy and said 'oh! I see my home, I would be happy to come back again to my home'," Holtzberg added.
The Holtzbergs spent some time in the Nariman House today before returning to the nearby Hotel Taj Mahal, where they are staying.
Moshe's Indian nanny Sandra Samuel was also present.
Moshe's parents ran a cultural and outreach centre for the Chabad-Lubavitch movement at the Nariman House in Colaba area before they were killed by terrorists.