| 46BCE | On Divination ('De divinatione') |
| 1.127 | p.338 | 6029 | Whoever knows future causes knows everything that will be |
| 45BCE | Academica |
| I.viii.32 | p.443 | 2661 | Dialectic is speech cast in the form of logical argument |
| II.40 | p.41 | 20800 | Every true presentation can have a false one of the same quality |
| II.vii.19 | p.493 | 2664 | If we have complete healthy senses, what more could the gods give us? |
| II.vii.22 | p.497 | 2665 | How can there be a memory of what is false? |
| II.xlvi.140 | p.649 | 2672 | Virtues must be very detached, to avoid being motivated by pleasure |
| II.xlviii.147 | p.657 | 2673 | There cannot be more than one truth |
| II.xxix.95 | p.587 | 2669 | Dialectic assumes that all statements are either true or false, but self-referential paradoxes are a big problem |
| 44BCE | On Duties ('De Officiis') |
| 1.110 | p.424 | 6031 | The essence of propriety is consistency |
| 1.11-20 | p.212 | 21405 | Cicero sees wisdom in terms of knowledge, but earlier Stoics saw it as moral [Long] |
| 1.117 | p.163 | 20871 | Unfortunately we choose a way of life before we are old enough to think clearly |
| 44BCE | On Fate ('De fato') |
| 02.03 | p.195 | 21667 | Oratory and philosophy are closely allied; orators borrow from philosophy, and ornament it |
| 16.38 | p.235 | 21677 | How can the not-true fail to be false, or the not-false fail to be true? |
| 17.40 | p.237 | 21678 | If desire is not in our power then neither are choices, so we should not be praised or punished |
| 44BCE | On the Nature of the Gods ('De natura deorum') |
| 2.147 | p.76 | 20814 | Eloquence educates, exhorts, comforts, distracts and unites us, and raises us from savagery |
| I.114 | p.116 | 2645 | Why shouldn't the gods fear their own destruction? |
| I.24 | p.80 | 2628 | Why would mind mix with matter if it didn't need it? |
| I.3 | p.70 | 2627 | I wonder whether loss of reverence for the gods would mean the end of all virtue |
| I.44 | p.88 | 2634 | It seems clear to me that we have an innate idea of the divine |
| I.48 | p.89 | 2635 | The gods are happy, so virtuous, so rational, so must have human shape |
| I.62 | p.94 | 2636 | Many primitive people know nothing of the gods |
| I.80 | p.102 | 2638 | Either the gods are identical, or one is more beautiful than another |
| I.86 | p.104 | 2640 | We have the death penalty, but still have thousands of robbers |
| I.88 | p.105 | 2641 | Why believe in gods if you have never seen them? |
| II.15 | p.129 | 2647 | It is obvious from order that someone is in charge, as when we visit a gymnasium |
| II.55 | p.145 | 2650 | If a person cannot feel the power of God when looking at the stars, they are probably incapable of feeling |
| II.77 | p.155 | 2651 | God doesn't obey the laws of nature; they are subject to the law of God |
| II.81 | p.156 | 2652 | Some regard nature simply as an irrational force that imparts movement |
| II.86 | p.158 | 2653 | If the parts of the universe are subject to the law of nature, the whole universe must also be subject to it |
| II.88 | p.159 | 2655 | If the barbarians of Britain saw a complex machine, they would be baffled, but would know it was designed |
| II.93 | p.161 | 2656 | Chance is no more likely to create the world than spilling lots of letters is likely to create a famous poem |
| III.24 | p.202 | 2657 | If everything with regular movement and order is divine, then recurrent illnesses must be divine |
| III.76 | p.226 | 2658 | The gods blame men for having vices, but they could have given us enough reason to avoid them |
| III.80 | p.228 | 2659 | The lists of good men who have suffered and bad men who have prospered are endless |
| 44BCE | Tusculan Disputations |
| I.ix.17-19 | p.23 | 5879 | The soul is the heart, or blood in the heart, or part of the brain, of something living in heart or brain, or breath |
| I.xx.47 | p.57 | 5884 | How can one mind perceive so many dissimilar sensations? |
| I.xxix.71 | p.83 | 5887 | The soul has a single nature, so it cannot be divided, and hence it cannot perish |
| I.xxvi.66 | p.77 | 5885 | Souls contain no properties of elements, and elements contain no properties of souls |
| I.xxvii | p.79 | 5886 | Like the eye, the soul has no power to see itself, but sees other things |
| IV.xxvi.56 | p.391 | 5890 | We should not share the distress of others, but simply try to relieve it |
| IV.xxxviii.84 | p.423 | 5891 | Philosophy is the collection of rational arguments |
| V.xxviii | p.509 | 5893 | A wise man has integrity, firmness of will, nobility, consistency, sobriety, patience |
| V.xxxi.88 | p.517 | 5894 | All men except philosophers fear poverty |
| V.xxxvi.104 | p.531 | 5895 | If one despises illiterate mechanics individually, they are not worth more collectively |