C.H. Spurgeon emphasizes that true strength comes from faith in the heart rather than intellectual skepticism. He critiques those who demand proof before believing, labeling them as headstrong and ultimately weak, as their obstinacy reveals a lack of true wisdom. Spurgeon argues that doubters often project their own faults onto believers, mistaking their own skepticism for strength. He asserts that the real wisdom lies in faith, which empowers individuals in times of trouble, contrasting the folly of modern doubt with the steadfastness of belief.