Why Liturgy?

When asked why liturgy, a friend born in 1959 answered, "I like the predictability." He went on to say that human beings need and crave both, predictability and novelty. Some need more of one than the other. We are wired that way. As the friend, a retired professor, gets older, his want is more predictability. For him, the liturgy provides contours for his spiritual journey. Additionally, liturgy is a corrective to excesses of personality. What say you? Why liturgy? #