In philosophy, anamnesis (/ˌænæmˈniːsɪs/; Ancient Greek: ἀνάμνησις) is a concept in Plato’s epistemological and psychological theory that he develops in his dialogues Meno and Phaedo, and alludes to in his Phaedrus.
It is the idea that humans possess knowledge from past incarnations and that learning consists of rediscovering that knowledge within us.
By the phaneron I mean the collective total of all that is in any way or in any sense present to the mind, quite regardless of whether it corresponds to any real thing or not. If you ask present when, and to whose mind, I reply that I leave these questions unanswered, never having entertained a doubt that those features of the phaneron that I have found in my mind are present at all times and to all minds. So far as I have developed this science of phaneroscopy, it is occupied with the formal elements of the phaneron.
– Charles Sanders Pierce