Padmasambhava mantra - Wildmind
Mantra is the essence of sound, and the embodiment of the truth in the form of sound.
Sogyal Rinpoche • The Tibetan Book of Living and Dying: The Spiritual Classic & International Bestseller: Revised and Updated Edition
The word mantra means “protector of thought.” Thus, a mantra is like an amulet or talisman, but one that protects its user’s mind rather than their body.