The warrior's third tool is actually a weapon. It is represented by the analogy of a bow and arrow, which is connected with developing skillful means and wisdom. The arrow, the wisdom of discriminating awareness, is experiencing the sharpness of sense perceptions and developing psychological accuracy. Here, you are wielding your intelligence as a weapon of awareness. You can't develop this kind of sharpness unless some experience of egolessness has manifested in your mind. Otherwise, your mind will be preoccupied, full of its own ego. But when you have made a connection with basic goodness, you can relate with both the sharpness of the arrow and with the skillful means provided by the bow. The bow allows you to harness or execute the sharpness of your perceptions
From "The Tools of Bravery, " pages 65 and 66, in Smile at Fear: Awakening the True Heart of Bravery.