Butter Pecan Cookies

1 cup butter
3/4 cup brown sugar
3/4 cup granulated sugar
2 eggs
1 teaspoon vanilla extract
2 1/4 cups sifted flour
1 teaspoon baking soda
1/2 teaspoon salt
1 cup finely chopped pecans

Cream butter and sugars until light and fluffy. Add eggs and vanilla extract. Beat thoroughly. Add sifted dry ingredients and nuts. Mix well. Drop from a teaspoon onto an ungreased cookie sheet. Bake at 375 degrees F for about 10 minutes or until delicate brown.