The Guru is one who at all times abides in the profound depth of the Self. He never sees any difference between himself and others and he is completely free from all false notions of distinction -- that he himself is the Enlightened or Liberated while others around him are in bondage or the darkness of ignorance. His firmness or self-possession can never be shaken under any circumstances and he is never perturbed.

~ Bhagavan Sri Ramana Maharshi, Spiritual Instruction