There are no limits on true self-giving. It is not just to those one likes that one makes the offering. This involves a love that issues from the very CENTER of the person's being, directed to the CENTER of the other person's being, a love that gives ALL that the person is in order to foster the other person's life, a love that is offered to EVERYONE, without exception and without condition. The love is not offered to people because they are one's friends; people become "friends" because one loves them.
The breathing in and out of the earth's atmosphere by the body is a symbol of the eternal rhythm of the Self-I and Thou, in and out, up and down, forward and back, systole and diastole in their final unity. The conscious realization and incarnation of this rhythm, balance, unity, in the unique, individual pattern of one's life would lead — so I feel — to the breathing out of one's last breath into death into that air of eternity, which is the breath of life when the body is left behind.