As Christians addressing Christians, we, whose faith is called Unitarianism, invite you, our Roman Catholic brethren, to join with us in investigating the origin and true nature of that Gospel which we agree in believing worthy of the deepest study, the most unremitting interest, and the highest regard. We agree in believing every Christian to be bound to promote the welfare of his race to the utmost of his ability; and that that welfare is best promoted by the extensive spread and firm establishment of Divine truth. We agree in believing that all other gifts which the Father of men has showered on human kind are insignificant in comparison with the dispensation of grace: or rather, that their value is unrecognised till interpreted by it. We alike feel that the material frame of the universe, fair as it is, is but as a silent picture till a living beauty is breathed into it, and a divine harmony evolved from it by its being made the exponent of God's purposes of grace. We alike feel that the round of life is dull and tame, and its vicissitudes wearisome and irritating, till it becomes clear that they are preparative to a higher state. We alike feel that worldly pursuits, and even intellectual employments, are objectless and uninteresting, till they can be referred to purposes whose complete fulfilment must take place beyond the grave. We alike feel how pervading, how perpetual is the influence of Gospel principles in ennobling every incident, in hallowing every vicissitude of life; in equalizing human emotions; in animating the sympathies, in vivifying the enjoyments, and blunting the sorrows, of all who adopt those principles in full conviction of the understanding, and in perfect sincerity of heart. We agree in feeling how the whole aspect of existence changes, as the power and beauty of the Gospel become more influential;--as we learn where to deposit our cares, where to fix our hope, what to prize as a real possession, and what to regard as but loss in comparison of our inestimable gain. We feel in common how endurance may become a privilege, and earthly humiliation our highest honor, when sustained in the spirit, and incurred for the sake, of the Gospel. Feeling thus alike respecting the value of a common possession, desiring in common that all our race should be partakers of it, making it the most earnest of our prayers that we may receive it in its purity and employ it righteously, why should we not help one another to apprehend it and hold it firmly? We know, from the records of history, how the adherents of your faith have so prized it as to sacrifice all things for it; how Catholic confessors have borne long and painful testimony, and how Catholic martyrs have triumphantly sustained the last proof of the strength of their convictions. We can refer you to similar examples among those who believed as we believe; and neither you nor we can doubt, that should occasions of self-sacrifice again arise, every true Christian in your