So shaltow seen hem, leeve brother deere,
If it so be thou wolt, withouten slouthe,
Bileve aright and knowen verray trouthe.
– Geoffrey Chaucer
The Canterbury Tales, The Second Nun’s Tale. Tiburtius can smell the roses and lilies in his brother Valerian’s and Cecilia’s crowns, but cannot see them. Valerian promises that he will be able to see them if he believes correctly and knows real truth – he is referring to the truths and faith of Christianity.