TITLE: The only great book that Bourbaki ever wrote?
QUESTION [18 upvotes]: OK, the title is opinionated and contentious, but I have a definite
question. I know that the title refers to the Bourbaki volume
Groupes et Algèbres de Lie (Chapters 4-6), published in 1968, but

who said that it is the only great book that Bourbaki ever wrote?

The only reference I can find is the 2009 Prize Booklet for the AMS-MAA
Joint Meetings, where no source is given, but I'm sure I've seen the
claim somewhere else.
Edit. I have rolled back the title of this question to almost its original
form, because putting the title in quotes misled some people into thinking
I sought a source for the exact phrase "the only great book that Bourbaki
ever wrote." Rather, I wanted a source (not necessarily unique) for the idea
that Chapters 4-6 of Groupes et Algèbres de Lie  is Bourbaki's one great
book. Gerald's answer and Jim's comment together are exactly what I wanted.

REPLY [4 votes]: In a similar vein, Godement wrote in (1982, p. 6.28; translation):

... the previous lemma, which we have taken from N. Bourbaki, Lie Groups and Lie Algebras, chap. III, (the most unreadable presentation of the theory of Lie groups ever published since Sophus Lie, but fortunately the chapters on semisimple Lie groups and algebras make up for this)

Also Borel (1998):

A good example is provided by Chapters 4, 5, and 6 on reflection groups and root systems.
It started with a draft of about 70 pages on root systems. The author was almost apologetic in presenting to Bourbaki such a technical and special topic, but asserted this would be justified later by many applications. When the next draft, of some 130 pages, was submitted, one member remarked that it was all right, but really Bourbaki was spending too much time on such a minor topic, and others acquiesced. Well, the final outcome is well known: 288 pages, one of the most successful books by Bourbaki. It is a truly collective work, involving very actively about seven of us, none of whom could have written it by himself.