A koan is a statement, in the form of a question, an anecdote, a story, or even a dialogue, aimed at awakening an epistemological and existential doubt in the student of zen that can lead to a higher form of comprehension of reality, and ultimately, enlightenment. A koan is often of a paradoxical nature, most commonly presenting rationally unsolvable matters regarding essential opposites that can lead to an identification of object and subject and pure consciousness.
Soliloquy. Because the definition is quite literally <span>an act of speaking one's thoughts aloud when by oneself or regardless of any hearers, especially by a character in a play.</span>