While doing some research for a book I am writing, tentatively titled The Holy Spirit: An Apostolic Perspective on Pneumatology, I came across the following quotation from John Morison in a book titled Conscience, written by Thomas Baird and published in 1914:

There is peril attending every step which is taken in the indulgence of any known sin, or in the neglect of any acknowledged obligation. A tender conscience will not trifle with its conviction, lest the heart should be hardened through the deceitfulness of sin.[archive]