Do not take vengeance or bear a grudge… love your fellow as yourself…Hillel presented the Jewish understanding of love your fellow as yourself in the negative “what is hateful to you, don’t do to others.” This is because we are human and it is impossible to love someone else as much as we love ourselves. Therefore, explains the Netziv, the same verse warns us against taking revenge or bearing a grudge – if we wronged someone else we would not want them to hold it against us. So too,love your fellow as yourself – what is hateful to you don’t do to others.