Perhaps there is one chain [of inference] leading from the mental and the physical to a common source. It is conceivable in the abstract that if ment… - Thomas Nagel

[A]bsurdity is one of the most human things about us: a manifestation of our most advanced and interesting characteristics. … [I]t is possible only because we possess a certain kind of insight — the capacity to transcend ourselves in thought.<p>If a sense of the absurd is a way of perceiving our true situation (even though the situation is not absurd until the perception arises), then what reason can we have to resent or escape it? … [I]t results from the ability to understand our human limitations. It need not be a matter of agony unless we make it so. Nor need it evoke a defiant contempt of fate that allows us to feel brave or proud. Such dramatics even if carried on in private, betray a failure to appreciate the cosmic unimportance of the situation. If sub specie aeternitatis there is no reason to believe that anything matters, then that does not matter either, and we can approach our absurd lives with irony instead of heroism or despair.

Usually, when we are told that X is Y we know how it is supposed to be true, but that depends on a conceptual or theoretical background and is not conveyed by the 'is' alone. … But when the two terms of the identification are very disparate it may not be so clear how it could be true … and a theoretical framework may have to be supplied to enable us to understand this. Without the framework, an air of mysticism surrounds the identification.<p>This explains the magical flavor of popular presentations of fundamental scientific discoveries, given out as propositions to which one must subscribe without really understanding them. For example, people are now told at an early age that all matter is really energy. But despite the fact that they know what 'is' means, most of them never form a conception of what makes this claim true, because they lack the theoretical background.

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 roughly this: There are elements which, if added to one's experience, make life better; there are other elements which, if added to one's experience, make life worse. But what remains when these are set aside is not merely neutral: it is emphatically positive. Therefore life is worth living even when the bad elements of experience are plentiful, and the good ones too meager to outweigh the bad ones on their own. The additional positive weight is supplied by experience itself, rather than by any of its contents.