You need a credo for a character whose power depends on commitment rather than information; or a philosophical line that decouples faith from any specific object and makes the believing itself the engine.

Foyle's final jaunting breakthrough comes when he stops needing a destination and believes in belief itself. This is Bester's theology of the novel in one sentence: the Common Man's power was never the map, it was the faith. Foyle crosses 540 light-years to Rigel not because he knows the coordinates but because he commits to the act of believing. The mechanism of every miracle in the book is willingness, not knowledge.