What is greater than God, more evil than the devil; the poor have it, the rich need it; and if you eat it, you’ll die?

Turn me on my side, and I am everything. Cut me in half, and I am nothing. What am I?

I eat everything, yet have no mouth. I see everything, without eyes Nothing escapes me, everything is in my reach

The largest number no one can describe so short as this, the barber who shaves only those who don’t shave their own tress, Does the list of every list without itself, itself say? Let me warn you that I’m a Cretan, always lying anyway.

I am nothing, yet without me empires shrink. I multiply worth by standing behind, and erase everything when I stand in front and get taken. What am I?