From Matthieu Ricard, Notebooks of a Wandering Monk, The MIT Press, pg. 93:

"The 'departure' of a spiritual teacher is a moment of depthless sorrow to his followers, as if the sun had suddenly fallen from the sky. But this particular sorrow rises above all feeling, all emotion, to carry us into the heart of what is essential. The teacher remains present in everything we perceive, see, and hear. He is no longer in his body; he inhabits everything around us because he remains at the very source of our thoughts, at one with the fundamental nature of our mind."