When Ford sells a car, a dealer isn't allowed to take out the engine and put a different one in. When a newsstand sells the Washington Post, no one can go to the newsstand and pay them to rip out the classified section and put their own classified section in - if they could, they would do so.

Know your numbers' is a fundamental precept of business.

The current information revolution is a cultural revolution, a social revolution, a thoroughgoing technological revolution that involves not just information, but labor, leisure, entertainment, communication, education, culture and thus is part of a major cultural and social shift.

We all learn best in our own ways. Some people do better studying one subject at a time, while some do better studying three things at once. Some people do best studying in structured, linear way, while others do best jumping around, surrounding a subject rather than traversing it. Some people prefer to learn by manipulating models, and others by reading.

To be a good professional engineer, always start to study late for exams because it teaches you how to manage time and tackle emergencies.

The internet is just a passing fad.

If you want to build a great company, get the hell out of Silicon Valley.