24 ideas
8093 | Seek wisdom rather than truth; it is easier [Joubert] |
8095 | We must think with our entire body and soul [Joubert] |
8107 | The love of certainty holds us back in metaphysics [Joubert] |
8099 | The truths of reason instruct, but they do not illuminate [Joubert] |
8098 | Truth consists of having the same idea about something that God has [Joubert] |
13913 | The four 'perfect syllogisms' are called Barbara, Celarent, Darii and Ferio [Engelbretsen/Sayward] |
13914 | Syllogistic logic has one rule: what is affirmed/denied of wholes is affirmed/denied of their parts [Engelbretsen/Sayward] |
13915 | Syllogistic can't handle sentences with singular terms, or relational terms, or compound sentences [Engelbretsen/Sayward] |
13916 | Term logic uses expression letters and brackets, and '-' for negative terms, and '+' for compound terms [Engelbretsen/Sayward] |
13850 | In modern logic all formal validity can be characterised syntactically [Engelbretsen/Sayward] |
13849 | Classical logic rests on truth and models, where constructivist logic rests on defence and refutation [Engelbretsen/Sayward] |
13851 | Unlike most other signs, = cannot be eliminated [Engelbretsen/Sayward] |
13852 | Axioms are ω-incomplete if the instances are all derivable, but the universal quantification isn't [Engelbretsen/Sayward] |
8101 | To know is to see inside oneself [Joubert] |
8094 | The imagination has made more discoveries than the eye [Joubert] |
8103 | A thought is as real as a cannon ball [Joubert] |
8100 | Where does the bird's idea of a nest come from? [Joubert] |
8096 | He gives his body up to pleasure, but not his soul [Joubert] |
8104 | What will you think of pleasures when you no longer enjoy them? [Joubert] |
8097 | Virtue is hard if we are scorned; we need support [Joubert] |
8106 | In raising a child we must think of his old age [Joubert] |
4800 | Natural laws result from eliminative induction, where enumerative induction gives generalisations [Cohen,LJ, by Psillos] |
8105 | We can't exactly conceive virtue without the idea of God [Joubert] |
8102 | We cannot speak against Christianity without anger, or speak for it without love [Joubert] |