Combining Philosophers

All the ideas for Herodotus, Augustus De Morgan and Walter Burley

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7 ideas

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

5. Theory of Logic / G. Quantification / 2. Domain of Quantification

17743

De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki]

9. Objects / E. Objects over Time / 6. Successive Things

16698

Days exist, and yet they seem to be made up of parts which don't exist [Burley]

16690

Unlike permanent things, successive things cannot exist all at once [Burley]

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities

16719

The primary qualities are mixed to cause secondary qualities [Burley]

29. Religion / D. Religious Issues / 2. Immortality / a. Immortality

1513	The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus]