This is a quote from My Utmost. I've been saving lines from it over the years. This was the first and one of my all-time favorites. It fills my heart to the brim when I read it.
“Have nothing…” – Never reserve anything.
Pour out the best you have, and always be poor.
Never be diplomatic and careful about the treasures God gives.
This is poverty triumphant.
This is one of many songs you should listen to: Frightened Rabbit - The Modern Leper (mp3)