The word "lifeless" as used in the book Discover Yourself is not quite correctly interpreted as "impersonal." It is an ambiguous word as used there. It really refers to that condition wherein everything is latent, potential, unexpressed, unindividuated, unmoving. The best way to understand it is to think of the mind during deep sleep. It is not functioning then and is apparently without life. Yet the potentialities are all there.
-- Notebooks Category 12: Reflections > Chapter 5: The Literary Work > # 239