| Quote | Episode | Reference |
|---|---|---|
| Shakespeare Quotes | ||
| Dagger of the Mind | TOS, I, 9 | Macbeth, II, i, 38 |
| The Conscience of the King | TOS, I, 12 | Hamlet, II, ii, (last) |
| By Any Other Name | TOS, II, 49 | Romeo and Juliet, II, ii, 44 |
| All Our Yesterdays | TOS, III, 77 | Macbeth, V, v, 22 |
| Thine Own Self | TNG, VII, 268 | Hamlet, I, iii, 78 (or 83) |
| The Undiscovered Country | ST VI | Hamlet, III, i, 86 |
| Non-Shakespeare quotes | ||
| Whom Gods Destroy | TOS, III, 70 | (Roman proverb; quoted by Juvenal) Quem deus vult perdere, dementat prius. |
| This Side of Paradise | TOS, I, 23 | F. Scott Fitzgerald |
| Who Mourns for Adonais? | TOS, II, 30 | Percy Bysshe Shelley |
| Is there in truth no beauty? | TOS, III, 61 | George Herbert: Jordan (I), line 2 |
| And the Children Shall Lead | TOS, III, 59 | ??? |
| Bread and Circuses | TOS, II, 52 | (Roman proverb; quoted by Juvenal) |
| When the Bough Breaks | TNG, I, 118 | Rockabye . . . |
| We'll Always Have Paris | TNG, I, 124 | Casablanca |
| Where Silence Has Lease | TNG, II, 128 |