Full Idea
A defined name ought not to be repeated in the definition. ...No total can be part of itself.
Gist of Idea
A defined name should not appear in the definition
Source
Thomas Hobbes (De Corpore (Elements, First Section) [1655], 1.6.15)
Book Reference
Hobbes,Thomas: 'Metaphysical Writings', ed/tr. Calkins,Mary Whiton [Open Court 1905], p.36