Your fellow man is your mirror. If your own face is clean, the image you perceive will also be flawless. But should you look upon your fellow man and see a blemish, it is your own imperfection that you are encountering - you are being shown what it is that you must correct within yourself.
Baal Shem TovThou shalt love thy neighbor as thyself." Why? Because every human being has a root in the Unity, and to reject the minutest particle of the Unity is to reject it all.
Baal Shem TovTelling the proper stories is as if you were approaching the throne of Heaven in a fiery chariot.
Baal Shem Tov