From Thomas DeQuincey, Confessions of an English Opium-Eater:

"I was once told by a near relative of mine that having in her childhood fallen into a river, and being on the very verge of death but for the assistance which reached her at the last critical moment, she saw in a moment her whole life, clothed in its forgotten incidents, arrayed before her as in a mirror, not successively, but simultaneously; and she had a faculty developed as suddenly for comprehending the whole and every part.

This, from some opium experiences, I can believe; I have, indeed, seen the same thing asserted twice in modern books, and accompanied by a remark which is probably true - viz., that the dread book of account which the Scriptures speak of is, in fact, the mind itself of each individual. Of this, at least, I feel assured, that there is no such thing as ultimate forgetting; traces once impressed upon the memory are indestructible; a thousand accidents may and will interpose a veil between our present consciousness and the secret inscriptions on the mind. Accidents of the same sort will also rend away this veil.

But alike, whether veiled or unveiled, the inscription remains forever; just as the stars seem to withdraw before the common light of day, whereas, in fact, we all know that it is the light which is drawn over them as a veil, and that they are waiting to be revealed whether the obscuring daylight itself shall have withdrawn.”