In a room full of babies, if one starts crying, the rest will follow. Nobody escapes empathy. But, as is the case with babies, we feel empathy the strongest when the other is physically present. Therefore, make sure you meet your opponent, in the flesh. Let him see with his own eyes who and what you are: a human, just like him. This increases the chance that he’ll empathize with you and your interests. Once this happens, an agreement won’t be far off.