Spots in the mind?

Azhukkaru Avaa Vekuli Innachchol Izhukkaa Iyandrathu Aram - ThirukkuralVirtue lies in being free from Envy, Greed, Wrath and hurtful speech -  Loose TranslationIt is all very well for Tiru to say that Virtue lies in a spotless mind. The problem is that you cannot just dump your mind into a washing machine and take it out spotless. If you could, you need not bother about identifying the spots, you