Water is very clean. When it rains from the clouds it is very clean, but as soon as it drops on the ground it becomes muddy. So that muddiness has to be cleansed then water will come out again clean. Similarly, our consciousness is clean, but because it is contaminated with the muddy things of the material nature, it is cloudy.
One can purify the mind by the chanting process, just as one can purify gold by putting it in a fire and fanning it with a bellows.
Srimad Bhagavatam 3.28.10,
“Close down the temple send everyone out !!!” Regarding temple management, one man can be left behind to take care of the Deity while others go out. TNOBD Pg 431 – 9.2, Dec 6, 1994, to Sri Govinda.
When one has money but does not spend it, he remains a miser and is never happy. Similarly, when one’s intelligence is spoiled due to sense grantification, he remains a miser throughout his life.