Fully conscious beings recall their purpose and continue their work at night while their bodies rest, they remember what they were and what they can do.
It is not the personality, the character that is of the first importance in rebirth — it is the psychic being who stands behind the evolution of the nature and evolves with it.
When Consciousness descends into the material world, it becomes faint and uncertain due to inertia. All the beings from above that take birth in this world have the same experience.
About Savitri | B1C1-20 Transition from the Sleep to Waking (p.9)