Which lines in this excerpt from act iii of shakespeare’s macbeth refer to macbeth’s insecurity because of the threats to his kingship? 1.) naught's had, all's spent, where our desire is got without content: 'tis safer to be that which we destroy, than, by destruction, dwell in doubtful joy. 2.) we have scotch'd the snake, not kill'd it; she'll close, and be herself; whilst our poor malice remains in danger of her former tooth. 3.) that shake us nightly: better be with the dead, whom we, to gain our peace, have sent to peace, than on the torture of the mind to lie 4.) treason has done his worst: nor steel, nor poison, malice domestic, foreign levy, nothing, can touch him further.