Mantra means a sound, a certain utterance or a syllable. Today, modern science sees the whole existence as reverberations of energy, different levels of vibrations. Where there is a vibration, there is bound to be a sound. So, that means, the whole existence is a kind of sound, or a complex amalgamation of sounds – the whole existence is an amalgamation of multiple mantras. Of these, a few mantras or a few sounds have been identified, which could be like keys. If you use them in a certain way, they become a key to open up a different dimension of life and experience within you. - Sadhguru

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