The only medicine for suffering, crime, and all the other woes of mankind, is wisdom.

Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great

Keep on going, and the chances are that you will stumble on something, perhaps when you are least expecting it. I never heard of anyone ever stumbling on something sitting down.

The only people who never fail are those who never try.

The more difficulties one has to encounter, within and without, the more significant and the higher in inspiration his life will be.

Who looks outside, dreams. Who looks inside, awakes.

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

A wise man learns by the mistakes of others, a fool by his own.

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

Every feature has some maintenance cost, and having fewer features lets us focus on the ones we care about and make sure they work very well.

Nothing will ever be attempted if all possible objections must first be overcome.

A ship in harbor is safe, but that’s not what ships are for.

Get big quietly, so you don’t tip off potential competitors.

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

If you don’t have a competitive advantage

A fall into a ditch makes you wiser.

Imagination is more important than knowledge.

Arriving at one goal is the starting point to another.

I never perfected an invention that I did not think about in terms of the service it might give others… I find out what the world needs, then I proceed to invent.

Entrepreneurship is neither a science nor an art. It is a practice.