In the book Grace Notes: Daily Readings with a Fellow Pilgrim, Philip Yancey emphasizes that faith often requires belief before understanding. Sometimes, we must accept certain truths on faith to truly see or experience their significance. This highlights the importance of trust and belief in the journey of spiritual discovery.

He suggests that embracing faith can open our eyes to deeper truths that are not immediately visible. Yancey encourages readers to believe first, trusting that understanding and clarity will follow. As he puts it, "Some things just have to be believed to be seen," emphasizing that faith and perception are deeply interconnected.