Me, myself, and I.

Me? Can you guess what I am? This is easy so think carefully.

Voices echoes in my presence...from morning til late afternoon. I await quietly throughout the day all by myself , staring at the beings who pass before me never to say a word back to them. I see and play witness to many conversations and acts by you people of different origins and characteristics. You fill me up inside with the warmth emitting from your bodies pressing against my hard and cold, almost icy interior. My moves are limited that's for sure. Opening and closing like a person's eyes blinking with every second that passes him or her by. Going up and down like a person's chest while inhaling and exhaling the gift of God's creations.

...Now tell me this...What Am I?...