This material (none of which has been previously published in book form) gives the quintessence of the convictions which were characteristic of his mature thought. Their appeal in written form is increased by the pervasive influence of his belief that theology should be 'shot through with warmth of ardent devotion'. He addresses himself to the needs of both mind and heart, believing that when Scripture is opened there should be both light and heat. His overriding concern is that the Word of God should challenge every area where thinking and living can be shown to be deficient and that the traditions of men should give way to 'the claims of truth'.