Evaporation lets off the steam, boils away the moisture that has kept you stuck. Old glue dries to dust; you no longer adhere to former allegiances. Once the emotion is extracted from a memory, it can pass in review as an interesting curiosity.
Hillman argues that evaporation as alchemical operation performs the psychological work of detaching affect from memory, producing the dry salt of wisdom that characterizes aged, disillusioned insight.
, The Force of Character: And the Lasting Life, 1999thesis