neither pleasure nor pain

"You don't need tons of IQ in this business. It's temperamental not intellectual ... I'm in Omaha, Nebraska because Wall Street overstimulates."
- Warren Buffet [born 1930], CEO multi-conglomerate Berkshire Hathaway

all you need to do

"Just make more good choices than bad ones."
- Warren Buffett

ROI

"To choose whether a business is right to invest in, firstly we have to deal with things we are capable of understanding. Once we're over that filter, the business must have intrinsic characteristics that give it a durable competitive advantage. And then of course we'd vastly prefer a management in place with a lot of integrity and talent. And finally no matter how wonderful it is, it's not worth an infinite price; we want a price that makes sense."
- Warren Buffets's investing partner Charlie Munger, 85 year old Vice Chairman of Berkshire Hathaway

where he goes for advice

"I usually look in the mirror."

- Warren Buffett's [born 1930] response to a question posed in 2005 by an undergrad at his alma mater University of Nebraska. 

Berkshire Hathaway share performance [NYSE: BRK.A and BRK.B] here.