 As already noted, Nozick argues that because people own themselves and hence their talents, they own whatever they can produce with these talents. Moreover, it is possible in a free market to sell the products of exercising one’s talents. Any taxation of the income from such selling, according to Nozick, ‘institute[s] (partial) ownership by others of people and their actions and labor’ (Nozick, p. 172). People, according to this argument, have these exclusive rights of ownership. Taxation then, simply involves violating these rights and allowing some people to own (partially) other people. Moreover, it is argued, any system not legally recognizing these rights violates Immanuel Kant’s maxim to treat people always as ends in themselves and never merely as a means. The two main difficulties with this argument have been: (1) to show that self-ownership is only compatible with having such strong exclusive property rights; and (2) that a system of exclusive property rights is the best system for treating people with respect, as ends in themselves.