There are more ways than one to measure profits and losses.

We cannot change the cards we are dealt, just how we play the hand.

The most difficult part of writing a book is not devising a plot which will captivate the reader. It's not developing characters the reader will have strong feelings for or against. It is not finding a setting which will take the reader to a place he or she as never been. It is not the research, whether in fiction or non-fiction. The most difficult task facing a writer is to find the voice in which to tell the story.

When you're screwing up and nobody says anything to you anymore, that means they've given up on you.

Remember how quickly our field [computer science] changes. That's why you want to focus on learning things that don't change: how to work well with other people, how to carefully assess a client's real - as opposed to perceived - needs, and things like that.

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

All my adult life I've felt drawn to ask long-married couples how they were able to stay together. All of them said the same thing: "We worked hard at it.