Fides et ratio is the title of an encyclical letter issued by Pope John Paul II in 1998, described as an exploration of the relationship between faith and reason as two wings on which the human spirit rises to the
contemplation of truth. Students should note that
the image of two wings — each necessary, neither sufficient alone — is itself a poetic
image, and it reflects a long tradition of thinking about the complementarity of faith and reason
going back at least to Augustine and Anselm. The phrase is relevant to any poetry that grapples with the relationship between religious
belief and intellectual honesty —
the attempt to be both fully faithful and fully rational, refusing to choose between the demands of the heart and the demands of the mind. Related terms include credo ut intelligam (I believe in order to understand, Anselm's formula), intellectus fidei (the intellectual understanding of faith), and the tradition of the philosophical poem from
Lucretius through Dante to
the present.