Whenever I go anywhere I find persons in humble situations who smile at me and wish me well. I smile back and wish them well. It is because at some time or other I have tipped them. To me the system has never been an annoyance but a delightful opportunity for the exercise of tact and judgment.

Bohemian San Francisco, Its Restaurants and Their Most Famous Recipes—The Elegant Art of Dining, 1914, by Clarence E. Edwords