For the first, it is possible for something to arise in itself that removes the light from him, which, when combined with the light of faith, realizes the matters that faith obliges him to say, and he is the believer who has no evidence and looks at things on his own, and doubt enters into him from those who doubt him, for his nature gives consideration to the evidence except that he did not look, so if he is alerted, he is alerted. If the taste does not rush to him, otherwise it will be feared for him. The other believer is like a body whose structure has become straight, the mechanisms of its powers have become straight, and the layers of its eyes have been installed, except that unless the spirit is breathed into it, there is no light for its eyes. If a person is in this state of obscurity, then the spirit of faith is breathed into him, then his eyes see things with the light of faith. It is not possible for him to introduce doubts into him completely, for he has no light in hi