Walter Bagehot,
Lombard Street: A Description of the Money Market
“ Too much reserve only means a small loss of profit, but too small a reserve may mean 'ruin.' Credit may be at once shaken, and if some terrifying accident happen to supervene, there may be a run on the Banking department that may be too much for it, as in 1857 and 1866, and may make it unable to pay its way without assistance—as it was in those years. ”
