No scientist I’ve ever encountered takes Darwin on faith. Darwin’s theory has been maintained where the evidence supports it, and modified where it doesn’t. Evolutionary theory itself has evolved. Evolution, as it is understood today, isn’t about Darwin or faith but about observation, evidence, deduction and reason. Those who deny this presumably have failed at some point in the chain of logic to either observe, to examine evidence, to reason or to deduce.
James F. McGrath in blog post Taking Darwin on Faith?