This is from Andrew Louth's Discerning the Mystery:
The importance of liturgy, then, for tradition is that by the very fact of its being performed, of its being the doing of something that others have done before us, of its being a matter of significant actions that suggest meaning rather than define it, it introduces us into a context, a realm of values, in which the significance of tradition can be seen. By the fact that it goes beyond speech, it impresses on us the importance of the inarticulate: and it is not without significance that inarticulateness about what is deeply important is characteristic of the child, whom we have to be like if we are to enter the kingdom of heaven.This is exactly right. Isn't it so that traditions with little appreciation of liturgy either have little appreciation of tradition or a very legalistic understanding of tradition, as something that has to be obeyed? And his incredibly exact comment on the child has a very deep meaning, not only about how adults should approach the liturgy, but about how essential it is that we have children there - as teachers.