To not do anything with fear; and fear not whatever you do.

According to metaphysics fear is caused by the lack of light. Therefore the more light there is in the heart the more fearless the heart becomes. ... When a person is afraid of a dog, he gives the dog a tendency to bite him. This can be noticed so plainly in the lower creation, that every animal is afraid of another animal, and the expectation of harm makes it fear more than does the idea of the hugeness of the form or the bodily strength of another animal. Many things in life can be brought about, not only by wanting them and thinking about them, but also by fearing them, both objects and conditions. To clear one's mind of fear is like bringing light into a dark room, and as light is needed to illuminate a dark room so the light of the soul is necessary to clear away the thought of fear. ... When one fears, this world frightens one, but when one clears one's heart of all fear, the whole world of illusion turns into one single vision of the sublime immanence of God.