A very simple observation from Søren Kierkegaard on the difference between knowledge and action (commenting on the story of the Wise Men consulting the scribes in Jerusalem for the location of the Messiah):
Although the scribes could explain where the Messiah should be born, they remained quite unperturbed in Jerusalem. They did not accompany the Wise Men to seek him. Similarly, we may know the whole of Christianity, yet make no movement. The power that moves heaven and earth leaves us completely unmoved.
What a difference! The three kings had only a rumour to go by. But it moved them to make that long journey. The scribes were much better informed, much better versed…
Who had the more truth? The three kings who followed a rumour, or the scribes who remained sitting with all their knowledge?
Søren Kierkegaard (from Meditations from Kierkegaard, edited and translated by T.H. Croxall. I read it in “Watch for the Light”)