In preparing for battle I have always found that plans are useless, but planning is indispensable.

If you pay peanuts, you get monkeys.

Your most unhappy customers are your greatest source of learning.

Don’t take too much advice. Most people who have a lot of advice to give — with a few exceptions — generalize whatever they did. Don’t over-analyze everything. I myself have been guilty of over-thinking problems. Just build things and find out if they work.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Whether you think you can or you can’t, you’re right.

Don’t take too much advice. Most people who have a lot of advice to give — with a few exceptions — generalize whatever they did. Don’t over-analyze everything. I myself have been guilty of over-thinking problems. Just build things and find out if they work.

Catch a man a fish, and you can sell it to him. Teach a man to fish, and you ruin a wonderful business opportunity.