On bargain hunting

When it comes to looking for quality stocks during market downturns Buffett has a plethora of quotes including:
“In stocks, it’s the only place where when things go on sale, people get unhappy.”
“If I like a business, then it makes sense to buy more at 20 than at 30.”
“It’s far better to buy a wonderful company at a fair price, than a fair company at a wonderful price.”
“Whether we’re talking about socks or stocks, I like buying quality merchandise when it is marked down.”
“All there is to investing is picking good stocks at good times and staying with them as long as they remain good companies.”
$Berkshire Hathaway 13F(BK2999.US)$ $Citigroup(C.US)$ $Coca-Cola(KO.US)$ $Berkshire Hathaway-A(BRK.A.US)$ $Berkshire Hathaway-B(BRK.B.US)$