Another way to go green...

"Almighty God... established the minds of His preachers in the love of internal greenness, so that they despise all transitory things, seek nothing finite in this world, and disdain all its joys as arid. Hence the shepherd of the Church himself, calling his hearers in pastures of eternal greenness, speaks of God saying: 'According to his great mercy hath regenerated us to a lively hope, by the resurrection of Jesus Christ from the dead, unto an inheritance, incorruptible, and undefiled and that cannot fade, reserved in heaven.'"
Gregory the Great