We can only learn from mistakes, by identifying them, determining their source, and correcting them... people learn more from their own mistakes than from the successes of others.

To manage a system effectively, you might focus on the interactions of the parts rather than their behavior taken separately.

Successful problem solving requires finding the right solution to the right problem. We fail more often because we solve the wrong problem than because we get the wrong solution to the right problem.

It is far better to do the right thing wrong than to do the wrong thing right.

Managers who don't know how to measure what they want settle for wanting what they can measure.

Every problem interacts with other problems and is therefore part of a set of interrelated problems, a system of problems. I choose to call such a system a mess.

No problem stays solved in a dynamic environment.

Creativity is the ability to identify self-imposed constraints, remove them, and explore the consequences of their removal.

The lower the rank of managers, the more they know about fewer things. The higher the rank of managers, the less they know about many things.

Nothing is harder to topple than a fact that supports a deeply held prejudice denied by its holder.

It is the satisfaction we derive from 'going there' in contrast to the satisfaction derived from 'getting there.' Recreation provides 'the pause that refreshes.' It recreates creators.

You don't make a photograph just with a camera. You bring to the act of photography all the pictures you have seen, the books you have read, the music you have heard, the people you have loved.

Liars make the best promises.

This, then, is true liberty: the joy that comes in doing what is right. At the same time, it is also devoted service in obedience to righteous precept.

They never die who have the future in them.

Just go out there and get your heart broken in, so it'll be ready when you really need it.

I had a lot of fun [on The Voice] and I learned a whole lot about reality TV, for one, and how they kind of use the artists as characters to make a hit TV show.

If golfers can run around and crow when they make a birdie, I think it would be just as proper to lie down on the green and cry when you make a bogey.

Sadness is a powerful foe, maybe harder to keep down than happiness.

Hyperinflation can take virtually your entire life's savings, without the government having to bother raising the official tax rate at all.

Our true enemies are: ignorance and limitation.