Sparknotes editors, you need to review your definition of PLENUM in the glossary for Hobbes' Leviathan. A picture of the universe as a plenum makes a vacuum impossible.
The 15th Law of Nature is missing in this summary (Book I, Chapters 14-16, first page). Because of the missing number, the 15th Law is explained as the 16th, the 16th as the 17th and the 18th has become a short version of both the 17th and the 18th Law of Nature. Could you please look into this?
useful coverage of Hobbes basic terms. For further in-depth knowledge of these terms check out my blog where I have a short introductory essay to Hobbes state of nature being a state of war.