Tomato Sauce: ============= Heat the oil in a pan and add the carrot, onion, celery and garlic. Cook for 8 minutes over moderately low heat. Add herbs, tomatoes, salt and pepper. Simmer for an hour or more. Stuffing: ========= Combine ingredients, blending with your hands. Assembly: ========= Pound the veal slices thin and divide the stuffing among them. Roll up the veal around the stuffing and secure with a toothpick. Heat the oil, then brown the veal rolls, pouring off the fat. Add the sauce and simmer the veal rolls, covered, for 1 hour or until just tender when pierced with a knife.