This pulling out of the imagination which I am recommending, will also forbid us to summon up the memory of past misfortune, to paint a dark picture of the injustice or harm that has been done us, the losses we have sustained, the insults, slights and annoyances to which we have been exposed, for to do that is to arouse fresh life into all those hateful passions long laid asleep — the anger and resentment which disturb and pollute our nature.

Arthur Schopenhauer (1788 – 1860)