Lightness of spirit is related to Redemption, for it lifts us out of precarious situations. As soon as a priest goes in for revolutionary tactics in politics he becomes boringly serious. This world is all there is, and therefore he takes political involvements without a grain of salt. One rarely sees a Commisar smile. Only those who are ‘in the world, not of it’ can see events seriously and lightly. Joy is born by straddling two worlds — one the world of politics, the other of grace.
Fulton J. Sheen Those Mysterious Priests 238