Not impossible

     "But the man's a gentleman," John Quincy cried. "A captain in the British Admiralty. What you suggest is impossible."

    Chan shook his head. "Impossible in Rear Bay at Boston," he said, "but here at moonly crossroads of Pacific, not so much so. Twenty-five years of my life are consumed in Hawaii, and I have many times been witness when the impossible roused itself and occurred."

(from The House Without a Key, by Earl Derr Biggers)