Meditation is the central practice of spiritual development. In the state of meditation, everything about us is silent, still, and passive, except the consciousness, which, active and perceptive, investigates the causes of suffering. Through meditation, the consciousness awakens, develops, and expands.
"To commence with the study of the technique of meditation is to enter into the antechamber of the divine peace that surpasses all knowledge." - Samael Aun Weor, The Revolution of the Dialectic
"Meditation should for the basis for compassionate action, for seizing the opportunity to do something. The meditator's motivation, his sense of universal responsibility, should be expressed in deeds." - The 14th Dalai Lama
The purpose of meditation is to solve the problem of suffering.
Since the causes of suffering are psychological and difficult to perceive, meditation is necessary, because it is the only method to acquire information that is inaccessible to the mind or the senses.