Warren Buffett has made the day's biggest splash on Twitter with his first-ever tweet at 12:20 declaring that "Warren is in the house," reports TheStreet. Two hours later, he had more than 100,000 followers, with the number growing quickly. It's quite a jump for a man who a few years back said he didn't know how to check his voicemail, notes the Wall Street Journal. The move comes ahead of Berkshire Hathaway's annual shareholders meeting this weekend. And in honor of the occasion, Business Insider rounds up some of Buffett's best lines. Click for Buffett's column today on what he thinks is the key to American prosperity.