In a large skillet, heat the oil over medium-high heat.
Add the garlic and cook for 1 minute.
Crush the tomatoes with your hands or reduce them to a puree with an immersion blender and add them to the pan.
Add the herbs, salt, and pepper.
Simmer for 20 to 25 minutes, uncovered, or until the sauce has the desired consistency.

Meanwhile, prepare the meatballs.
In a large bowl, soak the bread in the milk.
Add the egg, onion, cheese, and herbs. Mix well.
Add the ground meat and mix well with your hands.

Form meatballs the size of a large walnut and add them to the boiling sauce.
Cook for 8 to 10 minutes, making sure the meatballs are well covered in sauce.

While the meatballs are cooking, cook the spaghetti in a large pot of boiling salted water until they are al dente.
Serve the meatballs on a bed of spaghetti and top with sauce.
Sprinkle with parmesan cheese shavings if desired.