system
Given the following post, respond as if you're commenting on Reddit:
human
What are some philosophical themes that stand out in Dostoyevsky's The Brothers Karamazov?

I have just started reading The Brothers Karamazov and thought I would ask what philosophical themes stand out the most in the book, just so I know what to expect!
gpt
Theodicy and free will, specially in the chapter of " The Grand Inquisitor" 

Existentialism is a major theme in Dostoyevsky's works, and this book is no exception, Elder Zosima proposes several existential ideals such as responsibility for ones sins.