Riddle — With thieves, I consort… the vilest, in short. I’m quite at ease in depravity, yet all divines need me. Savants couldn’t lose me… for I am the center of gravity. What am I?

Hint — With thieves, I consort… the vilest, in short. I’m quite at ease in depravity, yet all divines need me. Savants couldn’t lose me… for I am the center of gravity. What am I?

The correct answer is the alphabet ‘A’..