I don't particularly like the term "Darwinism" mainly because it seems to imply that modern evolutionary science somehow hinges on a revelation handed down to us by this messianic figure Darwin, and is based on his infallibility, when in reality it is today entirely irrelevant for the status of the theory of evolution what the man wrote or thought, much of which was wrong anyways. I say that as someone who has read his books and admires these things greatly as historical monuments.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition