| 1502 | Parmenides was much more cautious about accepting ideas than his predecessors [Simplicius on Parmenides] |
| 243 | It is foolish to quarrel with the mind's own reasoning processes [Plato] |
| 224 | When questions are doubtful we should concentrate not on objects but on ideas of the intellect [Plato] |
| 11283 | There is pure deductive reasoning, and explanatory demonstration reasoning [Aristotle, by Politis] |
| 23250 | Desired responsible actions result either from rational or from irrational desire [Aristotle] |
| 2676 | Didactic argument starts from the principles of the subject, not from the opinions of the learner [Aristotle] |
| 1848 | We are coerced into assent to a truth by reason's violence [Aquinas] |
| 22708 | Good reasons must give way to better [Shakespeare] |
| 13009 | A reason is a known truth which leads to assent to some further truth [Leibniz] |
| 16897 | Reason is the faculty for grasping apriori necessary truths [Leibniz, by Burge] |
| 6253 | Reason is our power of finding out true propositions [Hutcheson] |
| 5604 | In reason things can only begin if they are voluntary [Kant] |
| 5622 | The boundaries of reason can only be determined a priori [Kant] |
| 5623 | If I know the earth is a sphere, and I am on it, I can work out its area from a small part [Kant] |
| 21416 | Philosophers should not offer multiple proofs - suggesting the weakness of each of them [Kant] |
| 21974 | The world seems rational to those who look at it rationally [Hegel] |
| 7083 | Highest reason is aesthetic, and truth and good are subordinate to beauty [Hegel] |
| 17892 | For clear questions posed by reason, reason can also find clear answers [Gödel] |
| 23945 | Reason is actually passions, guided by perspicacious reflection [Solomon] |
| 3811 | Entailment and validity are relations, but inference is a human activity [Searle] |
| 3822 | Theory involves accepting conclusions, and so is a special case of practical reason [Searle] |
| 19304 | The rules of reasoning are not the rules of logic [Harman] |
| 19307 | If there is a great cost to avoiding inconsistency, we learn to reason our way around it [Harman] |
| 19309 | Logic has little relevance to reasoning, except when logical conclusions are immediate [Harman] |
| 19306 | It is a principle of reasoning not to clutter your mind with trivialities [Harman] |
| 6950 | You can be rational with undetected or minor inconsistencies [Harman] |
| 3099 | Inference is never a conscious process [Harman] |
| 23249 | The early philosophers thought that reason has its own needs and desires [Frede,M] |
| 9429 | Many forms of reasoning, such as extrapolation and analogy, are useful but deductively invalid [Mumford] |
| 4767 | Traditionally, rational beliefs are those which are justified by reasons [Psillos] |
| 20955 | Art can make reason more all-inclusive, by articulating what seemed inexpressible [Bowie] |
| 5750 | Consistency is modal, saying propositions are consistent if they could be true together [Melia] |
| 6585 | Rationality is threatened by fear of inconsistency, illusions of absolutes or relativism, and doubt [Fogelin] |
| 8952 | We reach 'reflective equilibrium' when intuitions and theory completely align [Fisher] |