Till rising and gliding out, I wander'd off by myself, in the mystical moist night-air, and from time to time, look'd up in perfect silence at the stars. "When I heard the learn'd astronomer," Walt Whitman. Reread lines 6-8. What is the speaker's viewpoint of the stars themselves?
A. Stars are best understood through charts and diagrams.
B. Stars can be understood through their beauty, not through their measurements.
C. Stars can only be understood by ordinary people.
D. Stars are mysterious and unknowable.