Answer:
https://www.answers.com/Q/What_does_The_Bust_of_Pallas_symbolize
or
https://www.litcharts.com/lit/the-raven/symbols/pallas#:~:text=%E2%80%9CPallas%E2%80%9D%20refers%20to%20Pallas%20Athena%2C%20the%20Greek%20goddess,and%20his%20own%20rational%2C%20sane%20mind%20in%20particular.
Hope it helps =D
