The U.K.'s Blessed Cardinal John Henry Newman!

Snippets regarding the topic of "Faith," from The Heart of Newman, page 109.

"Faith is the correlative, the natural instrument of the things of the Spirit.

"While Christ was present in the flesh, He might be seen by the eyes, but His perfect and powerful presence which we now enjoy, being invisible, can be discerned, and used by faith only.

"Thus faith is a mysterious means of gaining gifts from God, which cannot otherwise be gained; according to the text: ..."

Now, the text...

"If thou canst believe, all things are possible to him that believeth ..."

Back to Newman ...

"If it was necessary for our justification that Christ should become a quickening Spirit and so be invisible; therefore  it was as necessary for the same, in God's providence, that we should believe ...

"... As the Spirit is the only justifier, so faith is the only recipient of justification..

"The eye sees what is material, the mind alone can embrace what is spiritual ..."

Way to go, your eminence! :)

Original cited source: "Lectures on Justification, 214 - 16."