The basic dignity of man is not made up of his achievements, virtues, or special talents. It is inherent in his very being. The commandment “Love thy neighbor as thyself” (Leviticus 19:18) calls upon us to love not only the virtuous and the wise but also the vicious and the stupid man. The rabbis have, indeed, interpreted the commandment to imply that even a criminal remains our neighbor (Pesahim 75a).
Heschel, Abraham Joshua (1997-05-16). Moral Grandeur and Spiritual Audacity: Essays (p. 370). Macmillan. Kindle Edition.