From Seth Speaks, pages 70 and 71:

“First of all, a soul is not something that you have. It is what you are…. The trouble is that you frequently consider the soul or entity as a finished, static “thing” that belongs to you but is not you. The soul or entity — in other words, your most intimate powerful inner identity — is and must be forever changing…. It is alive, responsive, curious. It forms the flesh and the world that you know, and it is in a state of becoming.

The soul or entity is always in a state of flux, or learning, and of developments that have to do with subjective experience rather than with time or space.

The soul is first of all creative…. The soul or entity is itself the most highly motivated, most highly energized, and most potent consciousness-unit known in any universe. It is energy concentrated to a degree quite unbelievable to you. It contains potential unlimited, but it must work out its own identity and form its own worlds. Within it are personality potentials beyond your comprehension. You are one manifestation of your own soul. How many of you would want to limit your reality, your entire reality, to the experience you now know? You do this when you imagine that your present self is your entire personality, or insist that your identity be maintained unchanged through an endless eternity.