 First, the Humanity Formula does not rule out using people as means to our ends. Clearly this would be an absurd demand, since we apparently do this all the time in morally appropriate ways. Indeed, it is hard to imagine any life that is recognizably human without the use of others in pursuit of our goals. The food we eat, the clothes we wear, the chairs we sit on and the computers we type at are gotten only by way of talents and abilities that have been developed through the exercise of the wills of many people. What the Humanity Formula rules out is engaging in this pervasive use of humanity in such a way that we treat it as a mere means to our ends. Thus, the difference between a horse and a taxi driver is not that we may use one but not the other as a means of transportation. Unlike a horse, the taxi driver’s humanity must at the same time be treated as an end in itself.