Are there really such thing as sheidim? If so, what are they? Please include sources.
What is the famous argument between the Vilna Gaon and the Ba'al HaTanya in understanding the Sod HaTzimtzum? And what are some ma'areh mekomos in their works where this Machlokes is seen?
How does Judaism deal with the differences between scientific evidence of the beginning of the world and the account(s) in Bereishit?