I desire to be understood to affirm nothing about the actual characters of those who hold views which I think unfriendly to the soul. The tendencies of opinions may be counteracted: but still wherever there is error, that is, wherever there is anything not conformed to the mind of God, _there_ there is, to the extent of its agency, a principle of evil, or at least of misdirection, at the fountain of our life, though there may also be sweetening influences which are strong enough to neutralize its power. Trinitarianism does not produce all its natural fruits, though it produces some that are sufficiently deplorable, because it is kept in check by the better principles of our nature, with which it is not in alliance. It is vain to pretend that a man’s belief has no influence upon his life and upon his soul. The belief of a man is that which animates his sentiments, and peoples his imagination, and provides objects for his heart;—and if he bears no impress of it upon his character, it is only because it forms no real part of his spiritual existence, it is not written upon the living tablets of the mind. Believing then that our views of Truth, when they become a part of our living thoughts, woven into the spiritual frame and the daily food of the mind, _do_ exercise a controlling influence over the whole being, it is our ardent desire to discover those views of the Gospel which put forth most mightily this power over the heart, and we openly confess, that it is because we believe it possesses an unrivalled efficacy to save the soul, by bringing it into a holy and trustful union with God and Christ, that we value unspeakably, and adhere to through all temptation and scorn, the faith that is in us. To us it is the light, as it is the gift of God, and we will not abandon it, so long as it points Conscience to the things that are before; leads us up to God through the love and imitation of his Christ; speaks with heavenly serenity of grand and tranquillizing truths in moments of trial: and true to our spiritual connections with Heaven, suffers our sins to have no peace, and our virtues no fears. I shall endeavour, briefly but distinctly, to bring out the prominent points of difference between Unitarian and Trinitarian Christianity, in their moral aspects.