Epigraph
Epigraph , noun
[Greek {not transcribed}, from {not transcribed}: compare French épigraphe. See Epigram.]
1.
Any inscription set upon a building; especially, one which has to do with the building itself, its founding or dedication.
2.
(Literature) A citation from some author, or a sentence framed for the purpose, placed at the beginning of a work or of its separate divisions; a motto.