22 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] |
11022 | Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read] |
11065 | The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna] |
11023 | The logical connectives are 'defined' by their introduction rules [Gentzen] |
11213 | Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen] |
13832 | Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking] |
10067 | Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave] |
8101 | To know is to see inside oneself [Joubert] |
20653 | Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson] |
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] |
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] |