Can you elaborate on the philosophical concept presented in Chapter 22 regarding the Sadguru as both formless and the cause of form?

Chapter 22 delves into a profound metaphysical concept about the Sadguru's nature. It explains that in a state of "total darkness" before perception, there was neither the snake (illusion) nor the rope (reality), and in this primordial state, the Sadguru was formless. However, the chapter also identifies him as the cause of the "dim light," the condition that allows illusion to arise and the formless to seemingly take form. It is through this that the "venomous snake" of illusion appears. The text acknowledges the depth of this truth, stating that because of it, "the Vedas became silent," implying it's a reality beyond ordinary comprehension.