This reminds me of a Latin proverb that came up in Samuel Beckett's Waiting for Godot, “Memoria praeteritorum bonorum [the past is always recalled to be good]” (99).
Every memory we can recall is a slightly modified version of a particular moment in time. We witness/experience an occurence, and then our minds doctor such event a bit/a lot as it is stored in our mental compartments.
I guess questioning the veracity of memories just can't be helped.
Source: PostSecret