Heat a medium sized saucepan over medium-high, and coat the bottom with olive oil. Add onion and carrots and salt and pepper to taste and cook until softened. Add raw lentils, 4 cups water and salt and pepper and bring to a boil. Lower the temperature to a rapid simmer and cook until the lentils are soft, but not mushy, and the water has evaporated. You may need to add water along the way or uncover if the lentils are cooked and water remains. Divide the lentils among the plates of your eaters.