man can, of course, from the sense of God within him, build altars “to the unknown god” (cf. Acts 17:23). He can reach out toward God in his thinking and try to feel his way toward him. But real liturgy implies that God responds and reveals how we can worship him. In any form, liturgy includes some kind of “institution”. It cannot spring from imagination, our own creativity—then it would remain just a cry in the dark or mere self-affirmation. Liturgy implies a real relationship with Another, who