from: [link]

We all experience within us what the Portuguese call "saudade", an inexplicable longing, an unnamed and enigmatic yearning of the soul, and it is this feeling that lives in the realms of imagination and inspiration, and is the breeding ground for the sad song, for the love song. Saudade is the desire to be transported from darkness into light, to be touched by the hand of that which is not of this world. The love song is the light of God, deep down, blasting up though our wounds.

[nick cave]