"Everything that we see, or imagine, or dream, we have to perceive in space. This is the ordinary space, called the Mahâkâsha, or elemental space. When a Yogi reads the thoughts of other men, or perceives supersensuous objects he sees them in another sort of space called the Chittâkâsha, the mental space. When perception has become objectless, and the soul shines in its own nature, it is called the Chidâkâsha, or knowledge space. When the Kundalini is aroused, and enters the canal of the Sushumna, all the perceptions are in the mental space." —Vivekananda, Raja Yoga


"We should not mistake the Truth with opinions. Many think that the Truth is this or that, or that the Truth is within this or that book, or within this or that belief or idea, etc. Whosoever wants to experience the Truth should not mistake beliefs, ideas, opinions and theories with that which is the Truth. We must experience the Truth in a direct, practical and real manner; this is only possible in the stillness and silence of the mind, and this is achieved by means of meditation."