Full Idea
If there be a common power set over both parties in a contract, with right and force sufficient to compel performance, a contract does not become void as soon as the parties are suspicious.
Gist of Idea
Suspicion will not destroy a contract, if there is a common power to enforce it
Source
Thomas Hobbes (Leviathan [1651], 1.14)
Book Reference
Hobbes,Thomas: 'Leviathan', ed/tr. Macpherson,C.B. [Penguin 1981], p.196