Authors:

Opportunity knocks at every man's door once. On some men's door it hammers till it breaks down the door and then it goes in and wakes him up if he's asleep, and ever afterward it works for him as a night watchman.

Opportunity knocks at every man's door once. On some men's door it hammers till it breaks down the door and then it goes in and wakes him up if he's asleep, and ever afterward it works for him as a night watchman.