There is a vitality, a life force, a quickening that is translated through you into action,โจand because there is only one of you in all time, this expression is unique. โจAnd if you block it, it will never exist through any other medium and be lost. โจThe world will not have it.. Dance Film Based on Martha Graham's Vitality featuring Canadian Dancer and teacher Alayna Kellet. Narrated by Avaah Blackwell.