"The sine qua non of spiritual life is purity, internal as well as external. The mind becomes impure by contact with evil desires.
So long as it is not purified, all talk of spiritual life is useless.
As gold purified in a crucible shines bright, so the constant meditation on the teachings of the Guru makes the mind pure, and bright with spiritual lustre.
Thus if inside the mind is purified by the words of the Guru, that purity is sure to reveal itself through external activities.
Mere bodily purity, without the purity of the heart, is absolutely useless. It would be a mere farce, like bathing a donkey. It is an empty show.
It would be as ludicrous as a beautiful lady wearing on her head a garland of pearls, but all the while standing naked. What is absolutely necessary, therefore, is an internal purity of the heart coupled with the external purity of good actions".
(Shri Ekanatha)
cited from "Kalyana-Kalpataru", January 1952 issue