Building a castle is difficult. Defending and maintaining it is harder still.

If you can do something to get somebody excited — not everybody — but if you can be the best for somebody, then you can win.

It is never too late to be what you might have been.

You can say anything to anyone, but how you say it will determine how they will react.

The surest way not to fail is to determine to succeed.

Do or do not. There is no try.

When you go to buy, don’t show your silver

The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will.

The diamond cannot be polished without friction, nor the man perfected without trials.

Money and success don’t change people; they merely amplify what is already there.

You shouldn’t focus on why you can’t do something, which is what most people do. You should focus on why perhaps you can, and be one of the exceptions.

Most great people have attained their greatest success just one step beyond their greatest failure

User experience is everything. It always has been, but it’s undervalued and underinvested in. If you don’t know user-centered design, study it. Hire people who know it. Obsess over it. Live and breathe it. Get your whole company on board.

The road to success is always under construction.