Colleges accept the highest sub-scores from different administrations. So if a student takes the SAT many times instead of once, she has a larger pool of scores from which to pick out the highest math, critical reading, and writing.

Tutoring follows the lucrative philosophy of advertising: if you can manufacture a need, people with disposable resources will find ways to fill it.

The fact is that the College Board's products - the SAT, other standardized tests, the accompanying strategy guides - are sold at far higher than the cost to make them.

Calling a book 'young adult' is only important in that it can help get a book to the right reader. After that, it's a useless abstraction and should be discarded.

I like the strategy of finding great entrepreneurs early, giving them some money, helping them a little - perhaps not as much as we would a regular core investment.

All my money is in a savings account. My dad has explained the stock market to me maybe 75 times. I still don't understand it.

I spend a lot of money on shoes and barely any on clothes.

What do you want your business to do? Make money, of course. To pay for people and supplies, to be able to grow.