According to Samkhya philosophy, liberation is the ultimate goal of human existence. It is the state of complete freedom from suffering and bondage, and the realization of one's true nature as the pure consciousness or Purusha.

Samkhya explains that the root cause of suffering and bondage is the identification of Purusha with Prakriti, which leads to the false belief that one is the body, mind, and ego. This identification creates a sense of duality and attachment to the material world, leading to desires, actions, and consequences. This cycle of cause and effect, known as samsara, is the cause of suffering and prevents one from realizing their true nature.

The path to liberation in Samkhya is through the discrimination between Purusha and Prakriti. By understanding the difference between the two, one can detach themselves from the material world and realize their true nature as the pure consciousness. This discrimination is achieved through self-inquiry and meditation, where one observes the activities of the mind and body and recognizes them as separate from the self.

Furthermore, Samkhya explains that the three qualities of Prakriti, known as gunas, play a crucial role in the path to liberation. These gunas are sattva (purity), rajas (activity), and tamas (inertia). Through the practice of detachment and discrimination, one can gradually increase the sattva guna and decrease the rajas and tamas gunas. This leads to a state of balance and harmony, which is essential for the realization of the self.

Once one has achieved a state of pure consciousness and detachment from Prakriti, they are liberated from the cycle of birth and death. This state of liberation, known as moksha, is the ultimate goal of Samkhya philosophy. It is the state of complete freedom, peace, and bliss, where one is no longer bound by the limitations of the material world.

In conclusion, Samkhya explains the concept of liberation as the realization of one's true nature as the pure consciousness, through the discrimination between Purusha and Prakriti and the attainment of a state of balance and harmony through the practice of detachment. Liberation is the ultimate goal of human existence and is achievable through self-inquiry, meditation, and the cultivation of sattva guna.