We still usually capitalise many of the words in a title such as
He Who Fears the Wolf
however if it is being catalogued for a library this capitalisation is wrong , it is
He who fears the wolf
Only conventional capitalisation is used though I have seen many entries wrongly capitalised in library catalogues.
I always wonder if I should, or should not, capitalise the heading of threads I start here, I usually don't and I think that is because I have been a library cataloguer )or maybe it is laziness).