Around 1630 Bradford began to compile his two-volume Of Plymouth Plantation, 1620-1647, one of the most important early chronicles of the settlement of New England. Bradford’s history was singular in its tendency to separate religious from secular concerns. Unlike similar tracts from orthodox Massachusetts Bay, Bradford did not interpret temporal affairs as the inevitable unfolding of God’s providential plan. Lacking the dogmatic temper and religious enthusiasm of the Puritans of the Great Migration, Bradford steered a middle course for Plymouth Colony between the Holy Commonwealth of Massachusetts and the tolerant secular community of Rhode Island.