It is important for human beings to rid themselves of their impurities, which is why purification exercises hold such an important place in Initiatic Science. We must undertake this purification not only by physical means (fasting, breathing exercises, cleansing, and so on), but also by spiritual means (concentration, meditation, and prayer) in order to introduce within ourselves a substance that breaks down and eliminates foreign and harmful elements.
Purity is essential for human beings to thrive; it is the prerequisite for our health, our strength, our beauty, our intelligence, our joy and our love.

Omraam Mikhaël Aïvanhov