Josef Bengston passed along this interesting little snippet from Alain de Botton, an old favorite of mine. This is lifted
from a TED talk in which he looks to religious sources for secular practices (kind of, in a backhanded way, confirming some of the analyses in
Desiring the Kingdom):
A sermon wants to change your life and a lecture wants to give you a bit of information. I think we need to go back to that tradition of sermon in education.
This, of course, only works as an exhortation if the sermon itself hasn't just devolved to a didactic lecture.