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old man head portrait face expression emotion wrinkles skin texture detail realism painting art oil canvas brushwork strokes technique style artist artwork gallery museum collection history culture heritage society people human life death aging old age loneliness sadness despair hopelessness misery suffering pain anguish mental health illness disease disorder depression anxiety stress trauma abuse neglect abandonment poverty homelessness hunger starvation malnutrition disease sickness frailty weakness vulnerability dependence helplessness hopelessness despair isolation alienation loneliness sadness sorrow grief mourning loss bereavement death dying passing away the end afterlife heaven hell purgatory reincarnation spirituality religion faith belief god dess higher power universe cosmos creation existence meaning of life purpose destiny fate karma samsara nirvana enlightenment awakening self-realization transcendence infinity eternity