Oliver Wendell Holmes, Jr., Mechanics' Metals National Bank v…
“ The bankrupts were under an agreement with the bank, of the usual sort, giving the bank a general lien on all securities in its hands for all liabilities of the firm, and a right to require additional approved securities to be lodged with it, etc. But a general promise to give security on demand puts the creditor in no better position than an agreement to pay money. ”
