摘几段：

Without Yau's guidance and support at this early stage,there would have been no Ricci Flow program
for Perelman to finish.

I cannot think of any other prominent leader who gave nearly support to our field as Yau has.

Far from stealing credit for Perelman's accomplishment,he has praised Perelman's work and joined me in supporting him for the Fields Medal. And indeed no one is more responsible than Yau for creating the program on Ricci Flow which Perelman used to win this prize.