There were lots of times, especially in the early days, that were very, very difficult. I think the most difficult experience I had was in 1990 when Oracle had its only loss quarter in history. We’d been in business for 20 years, and after 20 years we lost money one quarter. We had a very difficult time. We had virtually doubled our sales every year for ten years. Nine out of ten years, ten out of eleven years. It was really quite an amazing run. We were the fastest growing company in history

I realized that the biggest obstacle was my mind. It was the biggest obstacle, and if I could get out of the way of myself, I would grow. So every time I had that attitude, I changed it, and I’d say, “You can. Today you can, and take it one day at a time, and today, I’m going to get up and I’m not going to think about the other six days of this week. I’m going to get up right now, and I’m going to go to the gym, and I’m going to learn about my boxing, and I’m going to be in the moment.” You know, in anything, you hit a wall, and then you have to break through it, and I just had to get out of my own way.

The hard part was getting around this, this was a religion among physicists, and in fact even in the Bohr-Einstein debates, and with Schrödinger also, the universal religion was quantum mechanics makes correct predictions, period, no, off the table. What Bell's theorem and in particular our version of it, the Clauser-Horne-Shimony-Holt experimental prediction, showed that either that had to be wrong, nor Einstein's whole legacy had to be wrong. I think at the time people who were critical of doing the experiment didn't realise really what was at stake, that it was that cut and dried between two religious icons, if you will, the field of physics. Since I kind of was the inventor of the CHSH inequality and the CH inequality and all that, I knew exactly what it was all about. But it took a long time for that to filter in.

Then you have the clients. The care and feeding of clients is really one of the main obstacles, because you always have a client with some preconceived idea of what a house looks like, and all you want him to do is leave a check and go to Europe for a couple of years. Or leave two checks. But alas, life isn’t simple. If it were, more people would be better architects.

The problem is I'm older now, I'm 40 years old, and this stuff doesn't change the world. It really doesn't. That's going to break people's hearts. I'm sorry, it's true. Having children really changes your view on these things. We're born, we live for a brief instant, and we die.

I'm convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance. It is so hard. You put so much of your life into this thing. There are such rough moments in time that I think most people give up. I don't blame them. Its really tough and it consumes your life.

But the market was changing. The industry was changing. The scale was changing. And in the end we knew we would be either the last company to make it or the first to not make it. We were right on the edge. We thought we would be the last one that made it, but we were wrong. We were the first one that didn't. We put an end to the companies that tried to do that. We certainly made our fair share of mistakes, but in the end I think we should have taken a bit longer to realize the world was changing and just gone on to be a software company right off the bat.

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

I don’t think I’ve ever worked so hard on something, but working on Macintosh was the neatest experience of my life. Almost everyone who worked on it will say that. None of us wanted to release it at the end. It was as though we knew that once it was out of our hands, it wouldn’t be ours anymore.

Technology is nothing. What’s important is that you have a faith in people, that they’re basically good and smart, and if you give them tools, they’ll do wonderful things with them.