In the first half of the scene, Jocasta Nu tells the history of Count Dooku.
INTERIOR: JEDI TEMPLE, ARCHIVE LIBRARY - DAY
A bronze bust of Count Dooku stands among a line of other busts of Jedi in the Archive Room. OBI-WAN stands in front of it, studying the striking features of the chiseled face.
On the walls, lighted computer panels seem to stretch into infinity. Farther along the room in the background, FIVE JEDI are seated at tables, studying archive material.
After OBI-WAN studies the bust for a few moments before MADAME JOCASTA NU, the Jedi Archivist, is standing next to him. She is an elderly, frail-looking human Jedi. Tough as old boots and smart as a whip.
JOCASTA NU: Did you call for assistance?
OBI-WAN: (distracted in thought) Yes... yes, I did...
JOCASTA NU: He has a powerful face, doesn't he? He was one of the most brilliant Jedi I have had the privilege of knowing.
OBI-WAN: I never understood why he quit. Only twenty Jedi have ever left the Order.
JOCASTA NU: (sighs) The Lost Twenty... Count Dooku was the most recent and the most painful. No one likes to talk about it. His leaving was a great loss to the Order.
OBI-WAN: What happened?
JOCASTA NU: Well, Count Dooku was always a bit out of step with the decisions of the Council... much like your old Master, Qui-Gon Jinn.
OBI-WAN: (surprised) Really?
JOCASTA NU: Oh, yes. They were alike in many ways. Very individual thinkers... idealists...
JOCASTA NU gazes at the bust.
JOCASTA NU: He was always striving to become a more powerful Jedi. He wanted to be the best. With a lightsaber, in the old style of fencing, he had no match. His knowledge of the Force was... unique. In the end, I think he left because he lost faith in the Republic. He believed that politics were corrupt, and he felt the Jedi betrayed themselves by serving the politicians. He always had very high expectations of government. He disappeared for nine or ten years, then just showed up recently as the head of the separatist movement.
OBI-WAN: It's very interesting. I'm not sure I completely understand.
JOCASTA NU: Well, I'm sure you didn't call me over here for a history lesson. Are you having a problem, Master Kenobi?
I would give real money to get ahold of that scene in dvd quality... That and the rest of the homestead scenes.