He quickly knew that what he had been given was an old wine.
You don't get to know people that quickly, especially if they're the quiet type.
And photographers quickly know if they got the shot, in far less than the time it normally takes to develop film.
Which we know really quickly becomes too short for security.
"Whether the news was good or bad, we would know quickly and get to work."
He obviously needs to know quickly, so where is the harm?
Well, if you learn anything that is useful, let me know quickly.
They are at hand, and you shall quickly know.
He quickly knew that the rest of the order had been 'tie him'.
Men know quickly whether the drug is working - sometimes in less than a week.