A saying from the Vedas claims, "Speech is the essence of humanity." All of what humanity thinks and ultimately happens is determined by the expression of ideas and actions through speech and its derivative, writing. Everything, the Vedas maintain, comes into being through speech. Ideas remain unactualized until they are created through the power of speech.
In Vedic practices, most ancient techniques and classical Hinduism, mantra symbolizes as a necessity for spiritual advancement and high attainment. Here are some important ideas about mantra, which will enable you to begin a practical understanding of what mantra is and what it can do.
Mantras are energy-based sounds. Saying any word produces an actual physical vibration. Over time, if we know what the effect of that vibration is, then the word may come to have meaning associated with the effect of saying that vibration or word. This is one level of energy basis for words. Another level is intent. Actual physical vibration when coupled with a mental intention, the vibration then contains an additional mental component, which influences the result of saying it. The intent when overlaid upon the waveform of the sound as the carrier wave. Although there is a general meaning, which comes to be associated with mantras, the only lasting definition is the result or effect of saying the mantra.