"The way to God is exceedingly fearful and blocked deep by snow. Mohammed risked his life, driving his horse through and opening up the road. Whoever goes on this road, does so by his guidance and guarding. He discovered the road in the first place, and set up waymarks everywhere, posting signs that say, “Do not go in this direction, and do not go that way. If you go that way you will perish, even as the people of ‘Ad and Thamud, but if you go in this direction you will be saved, like the believers... Know that Mohammed is the guide. God says,“Until you first come to Mohammed you cannot reach Us.” This is like when you decide to go somewhere; thought leads the way, saying, “Go to this place, it is in your best interests.” After that your eyes act as a guide, and then your limbs begin to move, all in that order. But the limbs have no knowledge of eyes, nor the eyes of thought."