Love.
Love is the foundation of life; the purpose for our existance.
While we toil away our minds and bodies to the harsh realities of life, or heart stays strong with love.
Love for our mothers, our fathers, our sisters, and brothers. Love for those whom return it, and love for those who aren't even aware of the gift.
Love for those we have lost, for those who still stand with us, and love for those who have yet to even stand.
A beings life can easily be determined by how much they love. Believe me, I know.
After all, isn't it fitting for a Changeling to be unable to feel what is so generously given to every other creature?