"Sense and reason are crutches that a weak faith leans on. Can you bear up when the crutches of sense and present feeling are not at hand? Perhaps you sense God's love and favor upon you, and the sun is shining in the window of your heart. You feel at this moment that you will always trust God and never listen to your unbelieving thoughts again. But how do you find it when those sensible demonstrations are withdrawn, and some frowning providence comes? Do you presently doubt the promise in your thoughts, not knowing whether you can venture to cast anchor on it or not? Because you have lost the sense of His love, does the eye of faith fail you also in trusting His mercy and truth in the promise? If so, the eye of your faith is yet weak, since it needs the spectacles of sense to support it."
- William Gurnall