How does this indicate that logic requires faith? It simply means that logic cannot deal with figurative statements. It can only deal with literal statements.
By your reasoning, math requires faith too. Because if someone says, "I ate a million hamburgers at that restaurant yesterday" (when she in fact only consumed 13)... there would be a problem with the math. EXAMPLE: There is only enough ground beef in the coolers to make 80 or so burgers.
80 - 1,000,000 = -999,920 [DOES NOT COMPUTE] such a thing (her eating a million hamburgers is mathematically impossible.
Logicians ARE aware of the problems that the ambiguities of language present. For that reason, there are several fallacies that deal with JUST that.
But I still don't see where faith comes in. Can you elaborate on that, OP?
For example:
EQUIVOCATION