And while the prospect of sorting through everything "seems to delight the archivists", he said, the sheer volume of material "dismayed" him.
"There's so much [that] I'm quite glad to see the back of it. I just pity the poor research student who may have to make sense of it all."
The 74-year-old is donating his work without charge because he sees it as a way of repaying the free education he received at Exeter College in Oxford.
The librarian at the Bodleian, Dr Sarah Thomas, hailed Bennett's "extraordinary generosity" as the source of "one of the most important acquisitions for the library in recent times".
A formal reception will take place to mark the handover on Monday.
The library, which holds more than eight million written works, is more than 400 years old.
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