B-Box

I sit inside a shell.

I do what I want to do.

I can re-create a picture.

I can see inside of you.

I am gentle to the touch.

I am very hard to see.

I am round and beautiful.

I know you love to love me.

I am not good for everyone.

I am good for those who feed.

I am needed in everyone.

I am not one to tease.

I am now being summed up to something you can't explain.

I am simply your powerful function, I am simply your brain.