Theodore Parker was a Unitarian minister and prominent American Transcendentalist born in 1810 who called for the abolition of slavery. In 1853 a collection of “Ten Sermons of Religion” by Parker was published and the third sermon titled “Of Justice and the Conscience” included figurative language about the arc of the moral universe: “Look at the facts of the world. You see a continual and progressive triumph of the right. I do not pretend to understand the moral universe, the arc is a long one, my eye reaches but little ways. I cannot calculate the curve and complete the figure by the experience of sight; I can divine it by conscience. But from what I see I am sure it bends towards justice.” We will examine Parker’s words and how they made their way into movements led by Ghandi and Martin Luther King, Jr.