| Play | Key Line | Modern Text | Original Text |
| Henry VI Part 2 | 2H6 IV.vii.108 | God should be so obdurate as yourselves, | God should be so obdurate as your selues: |
| Henry VI Part 3 | 3H6 I.iv.142 | Thou stern, obdurate, flinty, rough, remorseless. | Thou, sterne, obdurate, flintie, rough, remorselesse. |
| The Merchant of Venice | MV IV.i.8 | His rigorous course; but since he stands obdurate, | His rigorous course: but since he stands obdurate, |
| Richard III | R3 I.iii.346 | Withal obdurate, do not hear him plead; | Withall obdurate, do not heare him pleade; |
| Richard III | R3 III.i.39 | Anon expect him here; but if she be obdurate | Anon expect him here: but if she be obdurate |
| Titus Andronicus | Tit II.iii.160 | Be not obdurate, open thy deaf ears. | Be not obdurate, open thy deafe eares. |
| The Two Gentlemen of Verona | TG IV.ii.116 | Madam, if your heart be so obdurate, | Madam: if your heart be so obdurate: |