Human beings are subject to moral and other motivational claims of very different kinds. This is because they are complex creatures who can view the … - Thomas Nagel

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Human beings are subject to moral and other motivational claims of very different kinds. This is because they are complex creatures who can view the world from many perspectives — individual, relational, impersonal, ideal, etc. — and each perspective presents a different set of claims. Conflict can exist within one of these sets, and it may be hard to resolve. But when conflict occurs between them, the problem is still more difficult. Conflicts between personal and impersonal claims are ubiquitous. They cannot, in my view, be resolved by subsuming either of the points of view under the other, or both under a third. Nor can we simply abandon any of them. There is no reason why we should. The capacity to view the world simultaneously from the point of view of one's relations to others, from the point of view of one's life extended through time, from the point of view of everyone at once, and finally from the detached viewpoint often described as the view sub specie aeternitatis is one of the marks of humanity. This complex capacity is an obstacle to simplification.