A.W. Tozer emphasizes the importance of critical thinking and self-education in his sermon 'Reading That Incites Thinking.' He recounts a conversation between Dr. Samuel Johnson and a king, highlighting that reading should stimulate deeper thought rather than just be a passive activity. Tozer argues that while reading is valuable, true understanding and wisdom come from within, and that ministers should be well-read to effectively teach their congregations. He warns against arrogance in ignorance, suggesting that humility and a willingness to learn are essential for spiritual leaders. Ultimately, Tozer encourages Christians to engage with their faith actively and thoughtfully.