“Nothing fixes a thing so intensely in the memory as the wish to forget it.”
Help us to complete the source, original and additional information
Michel De Montaigne 264
(1533-1592) French-Occitan author, humanistic philosopher, … 1533–1592Related quotes

“A retentive memory may be a good thing, but the ability to forget is the true token of greatness.”

“Nothing prints more lively in our minds than something we wish to forget.”
Book II, Ch. 12
Attributed

Source: Mutiny on the Bounty

“If you wish to forget anything on the spot, make a note that this thing is to be remembered.”
Marginalia http://www.easylit.com/poe/comtext/prose/margin.shtml (November 1844)
Variant: If you wish to forget anything on the spot, make a note that this thing is to be remembered.