51 ideas
| 14052 | Begin philosophy when you are young, and keep going when you are old [Epicurus] |
| 12274 | Begin examination with basics, and subdivide till you can go no further [Aristotle] |
| 12260 | Dialectic starts from generally accepted opinions [Aristotle] |
| 12291 | There can't be one definition of two things, or two definitions of the same thing [Aristotle] |
| 12292 | Definitions are easily destroyed, since they can contain very many assertions [Aristotle] |
| 12272 | We describe the essence of a particular thing by means of its differentiae [Aristotle] |
| 12279 | The differentia indicate the qualities, but not the essence [Aristotle] |
| 12283 | In definitions the first term to be assigned ought to be the genus [Aristotle] |
| 12289 | The genera and the differentiae are part of the essence [Aristotle] |
| 12261 | Differentia are generic, and belong with genus [Aristotle] |
| 12263 | 'Genus' is part of the essence shared among several things [Aristotle] |
| 12285 | The definition is peculiar to one thing, not common to many [Aristotle] |
| 11261 | Puzzles arise when reasoning seems equal on both sides [Aristotle] |
| 12273 | Unit is the starting point of number [Aristotle] |
| 12267 | There are ten categories: essence, quantity, quality, relation, place, time, position, state, activity, passivity [Aristotle] |
| 12282 | An individual property has to exist (in past, present or future) [Aristotle] |
| 12264 | An 'accident' is something which may possibly either belong or not belong to a thing [Aristotle] |
| 12280 | Genus gives the essence better than the differentiae do [Aristotle] |
| 13269 | In the case of a house the parts can exist without the whole, so parts are not the whole [Aristotle] |
| 12284 | Everything that is has one single essence [Aristotle] |
| 12262 | An 'idion' belongs uniquely to a thing, but is not part of its essence [Aristotle] |
| 12290 | Destruction is dissolution of essence [Aristotle] |
| 12286 | If two things are the same, they must have the same source and origin [Aristotle] |
| 12266 | 'Same' is mainly for names or definitions, but also for propria, and for accidents [Aristotle] |
| 12287 | Two identical things have the same accidents, they are the same; if the accidents differ, they're different [Aristotle] |
| 12288 | Numerical sameness and generic sameness are not the same [Aristotle] |
| 12259 | Reasoning is when some results follow necessarily from certain claims [Aristotle] |
| 12271 | Induction is the progress from particulars to universals [Aristotle] |
| 12293 | We say 'so in cases of this kind', but how do you decide what is 'of this kind'? [Aristotle] |
| 15308 | Science is the reduction of diverse forces and powers to a smaller number that explain them [Kant] |
| 14062 | Sooner follow mythology, than accept the 'fate' of natural philosophers [Epicurus] |
| 1837 | We should not refer things to irresponsible necessity, but either to fortune or to our own will [Epicurus] |
| 1836 | Prudence is more valuable than philosophy, because it avoids confusions of the soul [Epicurus] |
| 14061 | Our own choices are autonomous, and the basis for praise and blame [Epicurus] |
| 14054 | Fearing death is absurd, because we are not present when it occurs [Epicurus] |
| 14053 | It is absurd to fear the pain of death when you are not even facing it [Epicurus] |
| 14055 | The wisdom that produces a good life also produces a good death [Epicurus] |
| 14057 | All pleasures are good, but it is not always right to choose them [Epicurus] |
| 14058 | Pleasure is the goal, but as lack of pain and calm mind, not as depraved or greedy pleasure [Epicurus] |
| 1833 | Pleasure is the first good in life [Epicurus] |
| 14063 | Sooner a good decision going wrong, than a bad one turning out for the good [Epicurus] |
| 14059 | The best life is not sensuality, but rational choice and healthy opinion [Epicurus] |
| 1835 | True pleasure is not debauchery, but freedom from physical and mental pain [Epicurus] |
| 14056 | We only need pleasure when we have the pain of desire [Epicurus] |
| 14060 | Prudence is the greatest good, and more valuable than philosophy, because it produces virtue [Epicurus] |
| 12277 | Friendship is preferable to money, since its excess is preferable [Aristotle] |
| 12276 | Justice and self-control are better than courage, because they are always useful [Aristotle] |
| 12275 | We value friendship just for its own sake [Aristotle] |
| 12281 | Man is intrinsically a civilized animal [Aristotle] |
| 12265 | All water is the same, because of a certain similarity [Aristotle] |
| 12278 | 'Being' and 'oneness' are predicated of everything which exists [Aristotle] |