alexander koryagin:
IMHO it is informal speech, and they omitted THAT and
IS:
Besides, sir, your refusal wounds my pride; I must
believe you think THAT my offer IS unworthy your
acceptance.
Oh, no: it is as formal as can be, for it is 18th-century
gothic.  The pricipal characters talk like a book[1].
`think' works the same way as `consider', `deem', and
`find':
               I consider exceptions harmful.
               I deem     him        prim.
               I find     you        kind.
               I think    her        unkind.
____________________
1. See also Chandler's "Pearls are a nuisance", which made
   laugh so hard I strained my belly muscles.
--- 
 * Origin: nntp://news.fidonet.fi (2:221/6.0)