Why say Aum, when it is possible to say prayer? In substance they are the same, but because of its antiquity and refinement the sound Aum will be the stronger in its vibration. Let the resonance of the highest concept be pondered deeply. The word itself is vibration; such resonances are needed for the harmony of space.
Great Spiritual Toilers pray not for themselves. (Aum (opens in new tab), 25)