It is not a disgrace to fail. Failing is one of the greatest arts in the world.

You can't have a better tomorrow if you are thinking about yesterday all the time.

High achievement always takes place in the framework of high expectation.

An inventor is simply a fellow who doesn't take his education too seriously.

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

A problem well stated is a problem half-solved.

You will never stub your toe standing still. The faster you go, the more chance there is of stubbing your toe, but the more chance you have of getting somewhere.

The only time you mustn't fail is the last time you try.

here is a great difference between knowing a thing and understanding it. You can know a lot and not really understand anything.

The world hates change, yet it is the only thing that has brought progress.

If you're doing something the same way you have been doing it for ten years, the chances are you are doing it wrong.

I love the paranormal, because there, every genre I write can become one beacon for my imagination.

When we get to the end of ourselves, we get to the beginning of God.

I enjoy working on a movie that lets your imagination run wild, it’s great to be a part of and watch.

Fischer, the great American chess champion, famously said, 'Chess is life.' I would say, 'Pi is life.'

Of course it must, and our scientific men must be criticized boldly. They will not feel comfortable when you and I are through with them.

I am not a person of opinions because I feel the counter arguments too strongly.

Observation, reason, and experiment make up what we call the scientific method.

Neurotics build castles in the air, psychotics live in them. My mother cleans them.

You want to do movies that your children can watch, and that your children can have fun at and enjoy the experience of shooting.

Whole scenes of your life slip away forever if you don't put them down in ink.