Final answer:
Christian speaks for himself to independently express his thoughts, feelings, and opinions, reflective of the individualistic ideals also seen in transcendentalism.
Step-by-step explanation:
Christian decides to speak for himself in "Pilgrim's Progress" by John Bunyan to express his thoughts, feelings, and opinions independently. This action represents a significant element in the narrative, mirroring the individual's journey to defining and asserting one's beliefs and ideas. Similarly, transcendentalists like Emerson and Thoreau emphasized the importance of individualism and personal expression, encouraging people to speak their own minds and align with their own perceptions of a divine soul.