What is liturgy? Bringing what happened alive now

I came across this gem today from Barbara Crafton, who is an Episcopal priest working in Florence, Italy. She says our liturgy is an act of remembering, and remembering in a certain way:

In fact, all liturgy is just that: the recapturing of something that once happened, bringing it alive again and amplifying its meaning in the present moment, where we are now. The endless debate about "what's really happening" in a sacrament is fruitless, by and large: they are not rational occurrences, and they cannot be reduced to reasonable explanation. It is one of the saddest parts of being rational beings, this sterile insistence of ours that everything make sense, our grumpy suspicion of mystery. It cuts us off at the knees. Human beings are more than brains with legs. We are hearts, too. Many things can reach us, through many doors other than the door of our understanding. We owe it to ourselves to open all the doors, and throw open a few windows, too, while we're at it.