Are We Ever Really Strangers

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I was on my way to Winter Fete here in Alexandria when this gentleman was coming up the opposite way on the sidewalk.  Well I was doing my best to make sure I did not upset him by taking his photo but the more I turned the camera away the sadder he seemed so I took his photo which made him laugh and smile.  So are we ever really strangers or all connected by an inner thread of human need for contact and friendship.