I'll give you a hint, "The Dwarves is for the Dwarves" is from a CS Lewis book, not Tolkien.
C. S. Lewis was a close friend of J. R. R. Tolkien and would have been familiar with Tolkien’s take on dwarves because early drafts of LOR were read to Lewis’s Oxford Literary Club: The Inklings. To the extent that they may differ, I’ll take my stand with Tolkien.