12 ideas
| 291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
| 4045 | Children may have three innate principles which enable them to learn to count [Goldman] |
| 4044 | Rat behaviour reveals a considerable ability to count [Goldman] |
| 13174 | A piece of flint contains something resembling perceptions and appetites [Leibniz] |
| 13175 | Entelechies are analogous to souls, as other minds are analogous to our own minds [Leibniz] |
| 4048 | Infant brains appear to have inbuilt ontological categories [Goldman] |
| 13172 | What we cannot imagine may still exist [Leibniz] |
| 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] |
| 13173 | Death is just the contraction of an animal [Leibniz] |
| 293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |