That is what is meant, I think by the allegation that it is good simply to be alive, even if one is undergoing terrible experiences. The situation is… - Thomas Nagel

The distance between oneself and other persons and other species can fall anywhere on a continuum. Even for other persons the understanding of what it is like to be them is only partial, and when one moves to species very different from oneself, a lesser degree of partial understanding may still be available. The imagination is remarkably flexible. My point, however, is not that we cannot know what it is like to be a bat. I am not raising that epistemological problem. My point is rather that even to form a conception of what it is like to be a bat and a fortiori to know what it is like to be a bat, one must take up the bat's point of view.

All stages of sexual perception are varieties of identification of a person with his body. What is perceived is one's own or another's subjection to or immersion in his body. … In sexual desire and its expression the blending of involuntary response with deliberate control is extremely important. … In sexual desire the involuntary responses are combined with submission to spontaneous impulses: not only one's pulse and secretions but one's actions are taken over by the body; ideally, deliberate control is needed only to guide the expression of those impulses. … But the most characteristic feature of a specifically sexual immersion in the body is its ability to fit into the complex of mutual perception. … [S]exual desire leads to spontaneous interactions with other persons, whose bodies are asserting their sovereignty in the same way, producing involuntary reactions and spontaneous impulses in them. These reactions are perceived, and the perception of them is perceived, and that perception is in turn perceived; at each step the domination of the person by his body is reinforced, and the sexual partner becomes more possessible by physical contact, penetration [for the male], and envelopment [for the female].

We appear to be faced with a general difficulty about psychophysical reduction. In other areas the process of reduction is a move in the direction of greater objectivity, toward a more accurate view of the real nature of things. … The less it depends on a specifically human viewpoint, the more objective is our description. …<p>Experience itself, however, does not seem to fit the pattern. … If the subjective character of experience is fully comprehensible only from one point of view, then any shift to greater objectivity — that is, less attachment to a specific viewpoint — does not take us nearer to the real nature of the phenomenon: it takes us further away from it.