Answer:
The lines which show the friar's opinion about Romeo's judgement are:
2. Be patient, for the world is broad and wide.
3. A gentler judgement vanish'd from his lips,
4. This is dear mercy, and thou seest it not.
Explanation:
Romeo can no longer stay in town after murdering someone. He is told to leave which, in Friar Laurence's perspective, is a good thing. After all, Romeo could have very well gotten a death sentence. Instead, he is simply being exiled. That is what he is telling Romeo in lines 2, 3, and 4. He is trying to talk some sense into Romeo's head, because Romeo is acting as if being exiled - away from J.uliet - is worse than death. Laurence is basically telling him to stop fretting, that things could be worse, that this punishment is a blessing.
