Oneness

Can we grasp the unity concept with our mind?
Many gurus and mystics talk about us being all one.
and yet we are separate.

Separate but connected.

I think the easiest way we can feel the connection is at the emotional level.
Let us say I meet you for the first time.
You are carrying ten shopping bags.
One bag drops.
I bent over and pick it up for you.
You smile and look genuinely happy.
Can I feel any different than genuinely happy too?