There are two distinct ways of leading your life. The first is to follow someone else into obscurity – blind, cold, and full of false promises. All over the world, there is a plethora of false prophets ready to abuse your faith and trust, ready to betray you at the next moment if it is to their own advantage.
The second, then, is to enlighten the way in front of you by your own lights – take reason as your guide, and it shall never betray you. You may be wrong from time to time under certain circumstances, of course, yet it is not owing to your reason but your feelings that you may head for the wrong direction at some or other intersection. It is, however, better to make a false decision, so that you will have learned something in the end, than to be betrayed, so that the only things to remain shall be bitterness and repentence.
For if you follow your own lights, you will be able to track your way back to the intersection where you turned wrong, whereas you shall be helpless once you lose your orientation in the tenebrosity of faith.