Tomato-Vegetable Lentil Soup

I love soup and am glad to live in a place where we still have several months of serious soup weather. Lentils are way faster to cook than beans which have to be pre-soaked.

2 TBS olive oil
1 large chopped onion
2 ribs celery, diced
green bell pepper, seeded/diced
5 cups stock (vegetable, chicken, beef--wherever you are in the process)
3/4 cup lentils, rinsed/sorted for rocks, etc.
2 carrots, peeled/diced
1-2 bay leaves
1 tsp dried basil
1/2 tsp dried thyme
pepper to taste
1 large potato, peeled and diced relatively small
28 oz crushed tomatoes

Heat oil and add onion, celery and pepper. Cover and sweat over med low heat, about 8-10 minutes.
Add stock, lentils, carrot, bay leaf, and herbs. Bring to a boil, cover partially, and reduce heat to med low. Simmer about 15 min. Stir in the potato and a bit of salt. Simmer another 10 min.
Add the tomatoes. Cover and simmer, stirring occasionally, another 10-15 min. Add seasonings to taste.

This makes about 5 servings, and is adapted from Soup Makes the Meal, by Ken Haedrich.