We find it natural to say that creatures with minds can be understood ‘from the inside’. The paper explores what could be meant by this attractive but, on reflection, somewhat mysterious idea. It suggests that it may find a hospitable placement, which makes its content and appeal clearer, in one version of the so-called ‘simulation theory’ approach to grasp of psychological concepts. Simulation theory suggests that ability to use imagination in rethinking others’ thoughts and in recreating their trains of reasoning (...) is central to our grasp and use of psychological concepts.On this view to think of another’s mind is not to think of some intricate quasi-mechanical assemblage of items in the other’s head which causally explain her behavior. If this is all that the ‘inside’ of another person, i.e. her mind, were like, then there would be no question of anything being ‘from’ it. The simulation view, however, emphasizes that thoughts essentially have content and that identifying another’s thought, and working out its possible effects, involves identifying its content and oneself entertaining thoughts with the same content.So, on this approach, to think of another’s mind is to think of a complex but rationally unified set of thoughts, a set which is conceived as had by one subject but where the contents and relations can be grasped and appreciated by another. Some of these thoughts will be indexical and the whole can thus be said to constitute the subject’s point of view on the world, both literally and metaphorically. Grasping this point of view is, the paper suggests, what is meant by speaking of ‘understanding from the inside’. (shrink)