I know that, as night and shadows are good for flowers, and moonlight and dews are better than a continual sun, so is Christ's absence of special use, and that it hath some nourishing virtue in it, and giveth sap to humility, and putteth an edge on hunger, and funisheth a fairfield to faith to put forth itself, and to exercise its fingers in gripping it seeth not what.
Samuel Rutherford