Oneness does not mean we must all become the same, but rather, that we have all manifested from the One, and it is in our differences that Beauty may be expressed.
What is Love? How do we know it? How are we One in it? The mystical experience shows us directly not only what Love is, but that we are Love.
Is the body an essential part of our true Self? Or is it like a temporary temple for the Divine to live?
We operate from two identities simultaneously during our life, but one of those identities is greater, and is the one that we should strive to know, and be One with.