For 10 points, name this work published under the pseudonym "Anti-Climacus" whose title malady is described as "despair," a book by Soren Kierkegaard.
This work contains a discussion of recognizing oneself in a mirror and recognizing the self in "the mirror of possibility." It claims that while the loss "of an arm, a leg, five dollars, a wife" will be noticed by a religious fanatic, he will not notice that he has lost the self. According to this work, even "feminine youthfulness" is informed by the the titular phenomenon, which it explains can be caused by blind ambition or what its author terms the need to be "Caesar or nothing." Scattered throughout are references to plays like Macbeth and Richard II, and it explains the "defiance" and "weak" types of a certain phenomenon. This work ultimately asserts that true Christians are the only ones who can escape the title condition. For 10 points, name this work published under the pseudonym "Anti-Climacus" whose title malady is described as "despair," a book by Soren Kierkegaard.
This work contains a discussion of recognizing oneself in a mirror and recognizing the self in "the mirror of possibility.
The Sickness Unto Death [or Sygdommen til Doden]