world was created from AUM .The Shabda Brahman.
Sound has magical properties.
It carries cause,
It carries effect
It carries meaning.
A word can construct or destroy.
All words are powerful instruments in the hands of people who understand
Such people are Gurus, Mantra Shastris and really the Blessed people.
A Mantra Shastri should be a pious non materialistic and simple living
person, who never uses his Mantra for self gratification of creating
He should never practice the UCHHISTA MANTRAS or the Black Magic Mantras.