One interesting source of vision can be the people who get on my nerves, or the people who disagree with me, or even the people who I consider my enemies. By listening to people who oppose me, I may learn insights or critiques that will help clarify my vision or highlight real problems. While Nietzsche opposes Christianity and mocks the crucified Savior, his critiques highlighted real problems in the modern vision and in the ways that Christianity had become intertwined with the modern vision. It is hard to listen to people who mock or offend me, but sometimes they may tell me things that my friends fail to say for fear of hurting my feelings. So I must cultivate an ear to listen both to friends but also to those who oppose me.