From John Newton’s Cardiphonia:. This book strongly influenced poet Hannah More, of the Clapham Sect, the group (Wilberforce was a member) that was instrumental in abolishing the slave trade in the United Kingdom.
Romans 7:21 (ESV)
21 So I find it to be a law that when I want to do right, evil lies close at hand.
“But, blessed be God, though we must feel hourly cause for shame and humiliation for what we are in ourselves, we have cause to rejoice continually in Christ Jesus, who, as he is revealed unto us under the various names, characters, relations, and offices, which he bears in the Scripture, holds out to our faith a balm for every wound, a cordial for every discouragement, and a sufficient answer to every objection which sin or Satan can suggest against our peace. If we are guilty, he is our Righteousness; if we are sick, he is our infallible Physician; if we are weak, helpless, and defenceless, he is the compassionate and faithful Shepherd who has taken charge of us, and will not suffer any thing to disappoint our hopes, or to separate us from his love. He knows our frame, he remembers that we are but dust, and has engaged to guide us by his counsel, support us by his power, and at length to receive us to his glory, that we may be with him for ever.”
John Newton, Richard Cecil, The Works of the John Newton, vol. 1 (London: Hamilton, Adams & Co., 1824), 439.
“There must be not only a constant disposition to mourn over the sins of others, but upon some more than ordinary occasions it must with much seriousness be exercised and set a-work. It is said of Lot, 2 Peter 2:8, ‘He vexed his righteous soul’ in seeing their filthiness with his eyes and hearing their blasphemies with his ears, these were continual torments to him; he could go nowhere but he heard or saw something that was matter of grief to him. That is a sad prognostic of an approaching judgment when a country is so bad that it is made, as it were, a prison to a godly man. Daily a Christian hath his occasions of sorrow. How can we walk the streets with dry eyes when we here shall see a reeling drunkard, there hear a profane swearer rending and tearing the sacred name of God in pieces, a filthy speaker, theatres and the devil’s temples crowded with such a multitude of people, that men may learn more how to please the flesh and hate godliness, and feast their ears with filthy talk? To see people so mad against God, and ready to cast off the yoke of Christ everywhere, this occasions matter of grief and mourning before the Lord. But besides this, there must be solemn exercises, when our eyes must gush out with tears, and we must open the flood-gates. We must wish, as Jer. 9:1, ‘Oh, that my head were waters, and mine eyes a fountain of tears, that I might weep day and night for the slain of the daughter of my people!’ There are certain times when this is necessary, as times of great sin, and of judgment felt or feared.
Thomas Manton, 1620-1677
 Thomas Manton, The Complete Works of Thomas Manton, vol. 8 (London: James Nisbet & Co., 1872), 425.
“For the moon goeth its course, and lets the dog bark. We have a course to run, let us keep our course constantly; pass through good reports and bad reports; be at a point what the world thinks. We seek applause at another theatre than the world.”
Richard Sibbes, The Complete Works of Richard Sibbes, ed. Alexander Balloch Grosart, vol. 2 (Edinburgh; London; Dublin: James Nichol; James Nisbet And Co.; W. Robertson, 1862), 491.