7 ideas
13831 | Logic is based on transitions between sentences [Prawitz] |
13825 | Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz] |
13823 | In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz] |
3916 | Hopi consistently prefers verbs and events to nouns and things [Whorf] |
3917 | Scientific thought is essentially a specialised part of Indo-European languages [Whorf] |
7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
3915 | The Hopi have no concept of time as something flowing from past to future [Whorf] |