Immortality of the individualized soul is made possible by the fact that the individualized soul is not the same as the physical body. The individualized soul continues to exist with all its sanskaras in the inner worlds through its mental and subtle bodies, even after it has discarded its gross body at the time of death. Hence, life through the medium of the gross body is only a section of the continuous life of the individualized soul; the other sections of its life have their expression in other spheres.
-Discourses 7th Ed., p304