A paper titled for this concept asks why a mouse and the orbit of the moon do not possess it, and suggests treating it with "irony instead of heroism." One thinker claims that Kierkegaard "does more than discover [this concept], he lives it" in a section of an essay titled for "Walls" described by this concept. The "backwards step" of this concept reveals what we cannot "defend without circularity" in a Thomas Nagel paper titled for it. One should live in "revolt" (10[1])in response to this concept according to an essay which claims that the (10[1])"one truly serious philosophical problem" (10[1])is suicide. (10[1]-5[1])An essay ends by comparing this concept to a figure that "one must imagine happy." For 10 points, (10[1]-5[1])Albert Camus introduced his existential philosophy of what concept in The Myth of Sisyphus? (10[1])■END■ (10[2]0[2])