"They fulfilled their duty not from the accidental impulse of the moment; their action was the slowly ripened fruit of Providence and of time. The light that led them on was combined of rays from the whole history of the race; from the traditions of the Hebrews in the gray of the world's morning; from the heroes and sages of republican Greece and Rome; from the example of Him who died on the cross for the life of humanity; from the religious creed which proclaimed the divine presence in man, and on this truth, as in a life-boat, floated the liberties of nations over the dark flood of the Middle Ages; from the customs of the Germans transmitted out of their forests to the councils of Saxon England; from the burning faith and courage of Martin Luther; from trust in the inevitable universality of God's sovereignty as taught by Paul of Tarsus and Augustine, through Calvin and the divines of New England; from the avenging fierceness of the Puritans, who dashed the mitre on the ruins of the throne; from the bold dissent and creative self-assertion of the earliest emigrants to Massachusetts; from the statesmen who made, and the philosophers who expounded, the revolution of England; from the liberal spirit and analyzing inquisitiveness of the eighteenth century; from the cloud of witnesses of all the ages to the reality and the rightfulness of human freedom."
Fortunately, one can easily skim such interludes and authors.