Learn English – “Of which I am unaware of” & “I don’t know”, semantic difference

comparisonssemanticssynonymsusage

While reading first few chapters of fascinating book "On Writing Well", this doubt struck my mind:

"There are many great English writings of which I am unaware of"

OR

"There are many great English writings which I don't know"

What is the difference in meaning? Do they convey same meaning?

To me it doesn't feels the same. I would say, I am more inclined to express the first sentence as

"There are many great English writings which I don't know as yet"

Please help!

Thanks a lot.

Best Answer

There are many great English writings of which I am unaware of.

Is simply wrong. It could be

There are many great English writings of which I am unaware.

or

There are many great English writings that I am unaware of.

(okay, I'm a that/which stickler.)

The best way to state this is probably the most direct:

I am unaware of many great English writings.