This is the teaching of the Kwan-Yin Sutra. When that which is light at the highest level descends, it becomes like unto cool water, although intrinsically it is so radiant that it would be blinding. But when it is diffused it converts its state into a fluid which is extremely soothing, sometimes compared to the cool rays of the moon. And then it is capable of giving comfort and sustenance. When a person is soothed and cooled, it is possible to let go, to relinquish the intensity of self-concern.
Personal heat is intensely painful when it is experienced without any awareness of alternatives.
But when one finds that it may be displaced by soothing wisdom, the cooling waters of compassion, then it is possible to ease the pain and to convert one's mind from a falsely fiery state, which is destructive, into a cooling and regenerative condition. These are all alchemical expressions of processes that are involved in making deliberate changes in states of consciousness connected with different levels of matter. Theosophically, every level of thought corresponds to and is consubstantial with a level of differentiation of substance. Therefore, one can even discover in ordinary language certain words that tend to heat up the psycho-mental atmosphere. The very way in which one characterizes one's own condition may do a lot of violence through language.