Earlier quoted context omitted.
“I think the day Berkshire declares a dividend is a day when the stock goes down,” he says. “As it should.” -Warren Buffett http://dealbook.nytimes.com/2011/04/30/live-blogging-the-ber...
Interesting choice of words on his part. The stock goes down for every company. Anytime a dividend is declared the stock price is adjusted down by that same amount.
Though he also said this (it was paraphrased by a reporter, so it's not a direct quote):
Shareholders benefit more from leaving their money with him and reaping a handsome return than by getting a regular payout and depleting the Berkshire war chest.
*Same source as above