My theory is that when you're young, you should work eighty hours a week to create a product or service that changes the world.

If you're an entrepreneur and you think that the president makes a difference to your business, you should stay at your current job.

Coming from the U.S., you tend to look at one homogeneous market with 350 million people. But in Europe, every country has its own customs and laws.

Frequently, crashes are followed with a message like 'ID 02'. 'ID' is an abbreviation for idiosyncrasy and the number that follows indicates how many more months of testing the product should have had.

Good people hire people better than themselves. So A players hire A+ players. But others hire below their skills to make themselves look good. So B players hire C players. C players hire D players, etc.

The secret of evangelism is Guy's golden touch - whatever is gold, Guy touches. That’s very different than saying whatever Guy touches turns gold.

Twitter, Facebook, Google + are the trifecta of marketing for authors (and bloggers).