Love thy neighbor (n.) is the only answer to God's love — not a return along the opposite direction but continuing on the same route God's love opened.
Love thy neighbor (n.) is determined by chance proximity — and so is always love of one being to the detriment of another: privilege, even if not preference.
Love thy neighbor (n.) in its extremes of gratuitousness and futility is not leaving him alone as he dies, love without concupiscence.
Love thy neighbor (n.) has a harsh name: responsibility for my neighbor — love without Eros, love without concupiscence.
Love thy neighbor (n.) as yourself still presupposes self-love as the prototype of love; the ethical says instead: be responsible for the other as you are for yourself.