If you had put $10,000 in Berkshire Hathaway when he took control in mid 60's, your shares would be worth more than $50 million today! Today, the company's shares are worth more than $100, 000 a piece `:0
I'm thinking WB feels that way because he's super smart and a lot of complicated things really are simple for him. He's able to see through to the root of problems where others get distracted by the noise.
Reminds me of this one from PG: "I've found that people who are great at something are not so much convinced of their own greatness as mystified at why everyone else seems so incompetent."