In romeo and juilet find evidence showing that the adolescent brains are responsible for romeo and juliet's death

 I brought my master news of Juliet's death; 
And then in post, he came from Mantua 
To this same place, to this same monument. 
This letter he early bid me give his father,
And threatened me with death, going in the vault, 
I departed not and left him there.

This letter doth make good the friar's words, 
Their course of love, the tidings of her death: 
And here he writes that he did buy a poison 
Of a poor 'apothecary, and therewithal 
Came to this vault to die, and lie with Juliet.
Where are these enemies? Capulet! Montague! 
See, what a scourge is laid upon your hate, 
That heaven finds means to kill your joys with love. 
And I for winking at your discords too 
Have lost a brace of kinsmen: all are punished.