"Hold thy desperate hand. Art thou a man? Thy form cries out thou art; Thy tears are womanish, thy wild acts denote the unreasonable fury of a beast." Why is this quote significant?

Romeo responds to his banishment with weeping, collapsing on the ground as if his life were over. In the above quote, the Friar is pretty much admonishing Romeo to stop acting like a woman..... to look on the bright side, as he and Juliet were still alive...... and merely going to be separated.