Only in a living thing can doctrine thrive

Only in a living thing can doctrine thrive.
So scotch your screeds and gather in the aisles.
Critics natter and dogmatists contrive. 
The only law is how a baby smiles.
Only in a living thing can doctrine thrive.

Popes publish their infallible decrees.
But inspiration like a brush of butterflies
paints the summer day with mysteries.
Embrace your neighbor with a scholar's eyes.
Only in a living thing can doctrine thrive.