I read all 3 volumes of the 2nd edition in the 90s. A couple of the long difficult proofs I glossed over. IIRC I read all the problems, but can't say I worked t

I read all 3 volumes of the 2nd edition in the 90s. A couple of the long difficult proofs I glossed over. IIRC I read all the problems, but can't say I worked through very many. Vol 4a is on the coffee table in my office and I occasionally read some random passage.