18 ideas
19441 | All philosophies presuppose their historical moment, and arise from it [Feuerbach] |
19442 | I don't study Plato for his own sake; the primary aim is always understanding [Feuerbach] |
19444 | Each proposition has an antithesis, and truth exists as its refutation [Feuerbach] |
19445 | A dialectician has to be his own opponent [Feuerbach] |
19443 | Truth forges an impersonal unity between people [Feuerbach] |
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] |
4045 | Children may have three innate principles which enable them to learn to count [Goldman] |
10067 | Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave] |
4044 | Rat behaviour reveals a considerable ability to count [Goldman] |
19446 | To our consciousness it is language which looks unreal [Feuerbach] |
4048 | Infant brains appear to have inbuilt ontological categories [Goldman] |
19447 | The Absolute is the 'and' which unites 'spirit and nature' [Feuerbach] |
4043 | Elephants can be correctly identified from as few as three primitive shapes [Goldman] |
4049 | The way in which colour experiences are evoked is physically odd and unpredictable [Goldman] |
4047 | Gestalt psychology proposes inbuilt proximity, similarity, smoothness and closure principles [Goldman] |