| Following Aristotle, he announced that the primary principle of reasoning is that contradictories cannot both be true. |
| He entitles this kind of opposition dialectical, and that of contradictories analytical. |
| In other words, by which endoxes one of the contradictories becomes a legitimate opinion. |
| God can make either of them true, but he can't make both of them true, since they are contradictories. |
| Self and not-self, subject and object, are not contradictories, but dialectical polarities. |
| The dialectic of contradictories refers to the beautiful and the ugly in art, to truth and falsehood in philosophy, to the useful and useless in economics, to good and evil in ethics. |
