The "figurative system of human knowledge", sometimes known as the tree of Diderot and d'Alembert, was a tree developed to represent the structure of knowledge itself, produced for the Encyclopédie by Jean le Rond d'Alembert and Denis Diderot.
The tree was a taxonomy of human knowledge, inspired by Francis Bacon's Advancement of Knowledge. The three main branches of knowledge in the tree are: "Memory"/History, "Reason"/Philosophy, and "Imagination"/Poetry.
Notable is the fact that theology is ordered under 'Philosophy'. The historian Robert Darnton has argued that this categorization of religion as being subject to human reason, and not a source of knowledge in and of itself (revelation), was a significant factor in the controversy surrounding the work. Additionally notice that 'Knowledge of God' is only a few nodes away from 'Divination' and 'Black Magic'.
The original version, in French, can be seen in the graphic on the right. An image of the diagram with English translations superimposed over the French text is available. Another example of English translation of the tree is available in literacy. (See Reference by Schwab.) Below is a version of it rendered in English as a bulleted outline.
*These divisions can also be referred to the branch of mathematics which deals with their principles.
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