A powerful, yet often misunderstood, aim of spiritual study is purity.
Purity of the soul means to return to its original divine qualities.
The soul has become so polluted with less than divine qualities, it can
hardly enjoy being alive. Purifying the soul puts the higher self back
in charge - useless and negative thoughts are removed and annoying
habits finish. A pure soul cannot be touched by sorrow; indeed the
power of purity is such, it serves to remove the sorrow of the whole
world. Purity restores happiness - even bliss. All you need to do, in
order to re-establish your purity, is want it. But you need to want it
intensely, to the exclusion of everything else. The one thought, "I
must become completely pure". sparks a fire of love between you and
God. This fire melts away all the pollution, and your purity becomes
such a power that it frees you from all battles for ever.