Just as the fruits of work in this lifetime are all utimately destroyed, in the same way the benefits in the next life are also all ultimately destroyed. One who does not understand the nature of the soul remains unfulfilled and unsatisfied, even though he may obtain all his material desires. He does not attain the spiritual world on the death of the body. One who understands the nature of the soul  becomes satisfied and fulfilled. He obtains all his desires in this world and attains the spiritual world on the death of the body.