Theoretical and empirical are opposites, like dark and light. Empirical means verified by direct observation. Theoretical can't be seen, it's what we hope for, which is why we became a scientist.
Theoretical vs. Empirical
Faith = Evidence
You don't need to have faith in something if you can see it. Faith is needed when we can't see. However, that has nothing to do with evidence. As such, faith is believing in what you can't see because of evidence.
July 28th
If it's good enough for Star Trek, it's good enough for popular science (SciPop). Besides, if you've seen it in a Star Trek episode you already believe it. Slam dunk.
February 25th
The words faith and theory are synonyms. Sight and empirical are also synonyms. Empirical evidence is what we see. What we choose to believe about it is our faith.