Citta is known to have purity, changelessness and peacefulness as its qualities by nature, just like the nature of pure water. The qualities like purity are found everywhere in the citta of the body. Qualities of purity, since it is a reflection of the Lord, devoid of changes such as inaction or agitation, and devoid of passion and other emotions, are known as the natural modes of the citta. It is just like the original nature of water, which has an excellent quality. Pure water, without foam or waves, is sweet to the taste and peaceful. Just as water from contact with earth and other elements because impure, full of foam and waves, so citta attached to inferior objects becomes polluted from contact with lower consciousness (cetanā).