Though the tendency to tic is innate in Tourette's, the particular form of tics often has a personal or historical origin. Thus a name, a sound, a visual image, a gesture, perhaps seen years before and forgotten, may first be unconsciously echoed or imitated and then preserved in the stereotypic form of a tic. Such tics are like hieroglyphic, petrified residues of the past and may indeed, with the passage of time, become so hieroglyphic, so abbreviated, as to become unintelligible (as 'God be with you' was condensed, collapsed, after centuries, to the phonetically similar but meaningless 'goodbye').