The contract of suretyship and the contract of guaranty, which latter is merely a subdivision of the suretyship contract, is of peculiar interest, inasmuch as the contract is always an express one, and never arises by implication. The suretyship contract arises on the agreement that the surety or guarantor makes with the creditor to answer for the debt, default or miscarriage of another person. Since by the nature of the contract, the surety or guarantor takes on the obligation for which the principal debtor is originally liable, the surety or guarantor is called the obligor, and the one to whom his promise runs (the creditor) is called the obligee. The parties to the contract, strictly then, are only the obligor and the obligee, although the presence of and the continuing liability of the principal debtor to the creditor, is always an essential thing to make the contract one of surteyship. If the promise is not to answer for the debt, default or miscarriage of another person, whose liability continues, it would then be an original promise of the promissor and the promissor would not be a surety at all, so if the promise is to answer for the debt of another, the debt of the other person being thereby cancelled, the promissor's debt is original, and he is in no way a surety. So that the principal debtor is to be considered as always having a presence in the contract of suretyship, even though he is not a party to the contract of suretyship strictly. The surety's contract must always be collateral to the contract of the principal debtor.