4436. I was instructed that in mutual love there is a certain derivative species of conjugial love, [such] that one wills to be the other's, and thus reciprocally; this is [the nature] of conjugial love; but that of mutual love is, that one wills to give all that is his to the other, except his own life, which [last] is what conjugial love wills [to give]. Hence it may be manifest that mutual love is derived from conjugial love.