Full Idea
Divide terms, objects of ideas, into abstract and concrete, then the abstract into absolute and relational, the absolute into attributes and modifications, and those two into simple and composite; the concrete are substances and their substantial things.
Gist of Idea
Objects of ideas can be divided into abstract and concrete, and then further subdivided
Source
Gottfried Leibniz (New Essays on Human Understanding [1704], 2.22)
Book Reference
Leibniz,Gottfried: 'New Essays on Human Understanding', ed/tr. Remnant/Bennett [CUP 1996], p.213
A Reaction
Make your tree from this: ABSTRACT{absolute[attributes(simple)(composite)][modifications(simple)(composite)],relations}CONCRETE{[substance][substantial form]}