Add tomato paste and chopped garlic. Saute five more minutes. Don't overcook the garlic. The tomato paste should begin to brown and darken to help it release its flavors.
Add tomatoes. After 10 minutes, chop the tomatoes in the pot. Add celery and simmer on low for 30 minutes. Be sure to keep the mixture mixed so it doesn’t stick to the pot or to itself.
Move the pureed mixture back to the sauce pot. Add basil. Simmer for 20 more minutes.
Stir the pasta well, allowing each noodle to be lightly coated with the sauce.
Turn out the pasta into a large serving bowl. Top with the reserved sauce.
Garnish with some Parmigiano Reggiano cheese and serve.