Master Yoda.

Count Dooku.

You have interfered with our affairs for the last time.

[As Dooku fails to kill Yoda using Force-thrown objects (due to Yoda deflecting them with equally-strong use of the Force)]

Powerful you have become, Dooku. The Dark Side I sense in you.

I have become more powerful than any Jedi. Even you.

[As Dooku emits Force lightning, Yoda absorbs it with his hand and deflects it back to Dooku who also deflects it away from him. He tries again, but Yoda absorbs the lightning again, this time extinguishing it.]

Much to learn, you still have.

It is obvious that this contest cannot be decided by our knowledge of the Force, but by our skills with a lightsaber.