Horace Gray, St. Louis Railway Company v. Commercial Union Insurance Company…
“ In fire insurance, as in marine insurance, the insurer, upon paying to the assured the amount of a loss of the property insured, is doubtless subrogated in a corresponding amount to the assured's right of action against any other person responsible for the loss. But the right of the insurer against such other person does not rest upon any relation of contract or of privity between them. It arises out of the nature of the contract of insurance as a contract of indemnity, and is derived from the assured alone, and can be enforced in his right only. ”
