What is the meaning of 'Om mani padme hung'? I found on google that 'om mani padme hum, mean that in dependence on the practice of a path which is an indivisible union of method and wisdom, you can transform your impure body, speech, and mind into the pure exalted body, speech, and mind of a Buddha..'.
I want more about this.
You will probably not find a better explanation than that of the Dalai Lama.


  It is very good to recite the mantra OM MANI PADME HUM, but while you
  are doing it, you should be thinking on its meaning, for the meaning
  of the six syllables is great and vast. The first, OM, is composed of
  three pure letters, A, U, and M. These symbolize the practitioner's
  impure body, speech, and mind; they also symbolize the pure exalted
  body, speech and mind of a Buddha.


The entire talk can be found here:
http://www.sacred-texts.com/bud/tib/omph.htm


  Thus the six syllables, OM MANI PADME HUM, mean that in dependence on
  the practice which is in indivisible union of method and wisdom, you
  can transform your impure body, speech and mind into the pure body,
  speech, and mind of a Buddha. It is said that you should not seek for
  Buddhahood outside of yourself; the substances for the achievement of
  Buddhahood are within. As Maitreya says in his SUBLIME CONTINUUM OF
  GREAT VEHICLE (UTTARA TANTRA) all beings naturally have the Buddha
  nature in their own continuum. We have within us the seed of purity,
  the essence of a One Gone Thus (TATHAGATAGARBHA), that is to be
  transformed and full developed into Buddhahood.   (From a lecture
  given by His Holiness The Dalai Lama of Tibet at the Kalmuck Mongolian
  Buddhist Center, New Jersey.)