Business is constantly changing, constantly evolving.

If you want to do something different, you’re going to come up against a lot of naysayers.

Anger is a good motivator.

If you can't be unconventional, be obtuse. Be deliberately obtuse, because there are 5 billion people out there thinking in train tracks, and thinking what they have been taught to think.

Exactly 5,126 attempts to make the first bagless vacuum cleaner were failures-some catastrophic disappointments, some minor defects. It took 15 years. Prototype 5,127 was the success ... Failure is painful, but it spurs on improvement like nothing else.

Apartments are getting smaller on a whole. Houses are getting smaller. People don't need great big vacuums anymore.

The computer dictates how you do something, whereas with a pencil you're totally free.