Steve Jobs, Bill Gates and Mark Zuckerberg didn't finish college. Too much emphasis is placed on formal education - I told my children not to worry about their grades but to enjoy learning.

If you don't feel that you haven't read enough, you haven't read enough.

Your reputation is harmed the most by what you say to defend it.

If you sat with a pencil and jotted down all the decisions you've taken in the past week, or, if you could, over your lifetime, you would realize that almost all of them have had asymmetric payoff, with one side carrying a larger consequence than the other. You decide principally based on fragility, not probability. Or to rephrase, You decide principally based on fragility, not so much on True/False.

Don't disturb complicated systems that have been around for a very long time. We don't understand their logic. Don't pollute the planet. Leave it the way we found it, regardless of scientific 'evidence'.

Also, it's good to have more than one profession, in case your own profession goes out of style. A Wall Street trader who's also a belly dancer will do a lot better than a trader who winds up driving a taxi.

Never trust a journalist unless she's your mother.