Pasta with Walnut Pesto

Name: Pasta with Walnut Pesto
Ingredients: 1 pound Pasta, any short kind, like Farfalle; 1 scant cups Walnuts, raw, about 3 oz.; 1 small Clove of Garlic, peeled; 1 ounce Parmigiano-Reggiano cheese, in chunks; 1 slice Bread, sandwich white; 1/2 cup Milk (any fat percentage); 4 tablespoons Extra-virgin Olive Oil; 2 tablespoons Ricotta cheese; 1/4 teaspoon Salt; 1 sprig Marjoram, leaves only, optional; 4-6 tablespoons Parmigiano-Reggiano cheese, finely grated, to pass at the table; to taste Freshly ground black pepper