by love

"I believe that the world was created and approved by love, that it subsists, coheres, and endures by love, and that, insofar as it is redeemable, it can be redeemed only by love. I believe that divine love, incarnate and indwelling in the world, summons the world always toward wholeness, which ultimately is reconciliation and atonement with God."
....
"When I said early in this essay that we live in a world that was created and exists and is redeemable by love, I did not mean to sentimentalize it. For this is also a fallen world. It involves error and disease, ignorance and partiality, sin and death. If this world is a place where we may learn of our involvement in immortal love, as I believe it is, still such learning is only possible here because that love involves us so inescapably in the limits, sufferings, and sorrows of mortality."
-Wendell Berry

for the context of these two quotes check out this speech... Health is membership.