Durga, Lakshmi and Saraswati are seen as three dimensions of the feminine, symbolizing the earth, the sun and the moon, or tamas (inertia), rajas (activity, passion) and sattva (transcendence, knowledge, purity), respectively. Those who aspire for strength or power, worship forms of the feminine like Mother Earth, Durga or Kali. Those who aspire for wealth, passion, or material gifts worship Lakshmi or the sun. Those who aspire for knowledge, dissolution or the transcendence of the limitations of the mortal body worship Saraswati or the moon. The nine days of Navratri are classified according to these basic qualities. The first three days are dedicated to Durga, the next three to Lakshmi, and the last three to Saraswati. The tenth day, Vijayadashami, signifies the triumph over all these three aspects of life. – Isha Foundation