If there are more than two sexes, then so be it and, of course, the assumption that there are two helps shape, as many have argued, the binary logic that underpins much of the history of western philosophy.

However, within the limits of the human, it is important to recognise our common humanity. I think that a perspective based on common human needs has the most chance of being accepted and this does not depend on any particular metaphysical outlook.

Ethically and politically it is important to face up to the need for a universal perspective in our divided, multi-cultural, unequal and unjust world.

If one really believes that the metaphysic one adopts has much to commend it, then one should obviously try to persuade others of its truth or acceptability!

I believe that a concept that may have some flaws is nonetheless important as a tool to critique abuses on all sides of the political spectrum. In the end, I think that a more useful 'universal' concept than that of a 'right', though, is a 'need'.

If there are more than two sexes, then so be it and, of course, the assumption that there are two helps shape, as many have argued, the binary logic that underpins much of the history of western philosophy.

Autonomy is the capacity to act on principles that are one's own and one will exercise this capacity by means of a process of rational reflection on these principles. Autonomy is thought to be necessary for attributing political responsibility.