You have to love Bill Gates for really changing the way he thinks about wealth. He used to be the Sam Walton Family (See: The High Cost Of Low Price to understand how greedy they really are) of the greed chasers and has really turned to making something good with his wealth. If you purchase Memorize-It, I promise not to hook you into some sort of revolving money machine to keep taking your money. I have always been about creating software that I sell at a reasonable price and use any profit to make new products and services that are also sold at a reasonable price (If only it were that easy and I could actually afford to quit my day job and make more products). I also have always given a lot of my time and money to various charities and that will always continue. Especially the work I have done in Santa Ana and Africa and we have been looking at doing some work in Watts and Mexico.
Anyway, I really like what Bill said, "The self-interest behind capitalism had driven multiple innovations but to harness it to the benefit of all required the system be refined. Greater focus on recognition for improving the lives of others could provide a spur for companies to focus more on making money out of providing valuable products at affordable prices to the world's poor."
Impressive from one of the biggest (past) abusers of the capitalist system in the last century.