what is his role in the indian policy?
He claimed that the rights of "more advanced" peoples superseded the rights of the Indians.
John Winthrop
Winthrop's attitude toward the local Indian populations was generally one of civility and diplomacy. He described an early meeting with one local chief:

Chickatabot came with his [chiefs] and squaws, and presented the governor with a hogshead of Indian corn. After they had all dined, and had each a small cup of sack and beer, and the men tobacco, he sent away all his men and women (though the governor would have stayed them in regard of the rain and thunder.) Himself and one squaw and one [chief] stayed all night; and being in English clothes, the governor set him at his own table, where he behaved himself as soberly ... as an Englishman. The next day after dinner he returned home, the governor giving him cheese, and pease, and a mug, and other small things.

The colonists generally sought to acquire title to the lands that they occupied in the early years, although they also practiced a policy that historian Alfred Cave calls "vacuum domicilium": if land is not under some sort of act
who was the original leader of the puritans in the colonies and what was his famous quote John Winthrop. His quote was "bear one another's burdens". who was he? An English Puritan lawyer. was he a writer? Yes. can you name some of his works? : "A Modell of Christian Charity" and "The History of New England". was he involved in any controversy? Yes, the Antinomian controversy. what is the reason behind it? The new settlers had different religious views than Winthrop according to whom , these beliefs were heresy. what does the term antimonian refer to? It refers to  any view which rejects laws or legalism and argues against moral, religious or social norms, or is at least considered to do so. were there any works mentioning of this controversy? Yes, "A Short Story of the Rise, reign, and ruine of the Antinomians, Familists & Libertines". who wrote it? John Winthrop.
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John Winthrop [SEP] Indian policy
Winthrop's attitude toward the local Indian populations was generally one of civility and diplomacy. He described an early meeting with one local chief: Chickatabot came with his [chiefs] and squaws, and presented the governor with a hogshead of Indian corn. After they had all dined, and had each a small cup of sack and beer, and the men tobacco, he sent away all his men and women (though the governor would have stayed them in regard of the rain and thunder.) Himself and one squaw and one [chief] stayed all night; and being in English clothes, the governor set him at his own table, where he behaved himself as soberly ...