老骥伏枥,志在千里;烈士暮年,壮心不已。
An old warhorse rests by the manger, yet its ambition remains a thousand miles; a person of spirit in later years does not let bold purpose cease.
Plain meaningAge does not have to end ambition or purpose.
Original context and translation note
English wording on Gu Ren Said is an original reading aid, not a claim that there is only one valid literary translation.