What do Raavan's 10 heads symbolise?

In Hindu mythology, the 10 heads of Raavan carry different symbolic meanings, representing both his immense scholarly intellect and internal human vices. In one such interpretation, each head represents a human weakness: lust, anger, delusion, greed, pride, envy, intellect, mind, will, and ego. However, some traditions also associate them with Raavan's mastery of the four Vedas and six Shastras.