Everyone has to contribute to the common good. To not do so can be described in one word: selfish. - Randy Pausch

Because you’re such a good salesman, and if you go work for a company, they’re going to use you as a salesman. If you’re going to be a salesman, you might as well be selling something worthwhile, like education

I’d compare college tuition to paying for a personal trainer at an athletic club. We professors play the roles of trainers, giving people access to the equipment (books, labs, our expertise) and after that, it is our job to be demanding.

A lot of people want a shortcut. I find the best shortcut is the long way, which is basically two words: work hard.